diff --git a/api/migrations/0022_alter_uploadtask_registration_type.py b/api/migrations/0022_alter_uploadtask_registration_type.py
new file mode 100644
index 0000000..61078ef
--- /dev/null
+++ b/api/migrations/0022_alter_uploadtask_registration_type.py
@@ -0,0 +1,26 @@
+# Generated by Django 5.0.1 on 2024-03-14 19:13
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("api", "0021_remove_userprofile_default_project_number_and_more"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="uploadtask",
+            name="registration_type",
+            field=models.CharField(
+                choices=[
+                    ("GMN_StartRegistration", "GMN_StartRegistration"),
+                    ("GMN_MeasuringPoint", "GMN_MeasuringPoint"),
+                    ("GMN_MeasuringPointEndDate", "GMN_MeasuringPointEndDate"),
+                    ("GMN_TubeReference", "GMN_TubeReference"),
+                    ("GMN_Closure", "GMN_Closure"),
+                ],
+                max_length=235,
+            ),
+        ),
+    ]
diff --git a/gmn/migrations/0015_alter_gmn_delivery_accountable_party_and_more.py b/gmn/migrations/0015_alter_gmn_delivery_accountable_party_and_more.py
new file mode 100644
index 0000000..9093762
--- /dev/null
+++ b/gmn/migrations/0015_alter_gmn_delivery_accountable_party_and_more.py
@@ -0,0 +1,82 @@
+# Generated by Django 5.0.1 on 2024-03-14 19:39
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("gmn", "0014_alter_gmn_data_owner_and_more"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="gmn",
+            name="delivery_accountable_party",
+            field=models.CharField(max_length=8, null=True),
+        ),
+        migrations.AlterField(
+            model_name="gmn",
+            name="delivery_context",
+            field=models.CharField(max_length=100, null=True),
+        ),
+        migrations.AlterField(
+            model_name="gmn",
+            name="groundwater_aspect",
+            field=models.CharField(max_length=100, null=True),
+        ),
+        migrations.AlterField(
+            model_name="gmn",
+            name="monitoring_purpose",
+            field=models.CharField(max_length=100, null=True),
+        ),
+        migrations.AlterField(
+            model_name="gmn",
+            name="name",
+            field=models.CharField(max_length=100, null=True),
+        ),
+        migrations.AlterField(
+            model_name="gmn",
+            name="object_registration_time",
+            field=models.DateTimeField(null=True),
+        ),
+        migrations.AlterField(
+            model_name="gmn",
+            name="quality_regime",
+            field=models.CharField(max_length=50, null=True),
+        ),
+        migrations.AlterField(
+            model_name="gmn",
+            name="registration_status",
+            field=models.CharField(max_length=50, null=True),
+        ),
+        migrations.AlterField(
+            model_name="gmn",
+            name="start_date_monitoring",
+            field=models.DateField(null=True),
+        ),
+        migrations.AlterField(
+            model_name="measuringpoint",
+            name="gmw_bro_id",
+            field=models.CharField(max_length=50, null=True),
+        ),
+        migrations.AlterField(
+            model_name="measuringpoint",
+            name="measuringpoint_code",
+            field=models.CharField(max_length=50, null=True),
+        ),
+        migrations.AlterField(
+            model_name="measuringpoint",
+            name="measuringpoint_start_date",
+            field=models.DateField(null=True),
+        ),
+        migrations.AlterField(
+            model_name="measuringpoint",
+            name="tube_number",
+            field=models.CharField(max_length=50, null=True),
+        ),
+        migrations.AlterField(
+            model_name="measuringpoint",
+            name="tube_start_date",
+            field=models.DateField(null=True),
+        ),
+    ]
diff --git a/gmn/models.py b/gmn/models.py
index 3f823ac..8a4f015 100644
--- a/gmn/models.py
+++ b/gmn/models.py
@@ -16,15 +16,15 @@ class GMN(models.Model):
     updated_at = models.DateTimeField(auto_now=True)
     data_owner = models.ForeignKey(Organisation, on_delete=models.CASCADE)
     bro_id = models.CharField(max_length=18)
-    delivery_accountable_party = models.CharField(max_length=8)
-    quality_regime = models.CharField(max_length=50)
-    name = models.CharField(max_length=100)
-    delivery_context = models.CharField(max_length=100)
-    monitoring_purpose = models.CharField(max_length=100)
-    groundwater_aspect = models.CharField(max_length=100)
-    start_date_monitoring = models.DateField()
-    object_registration_time = models.DateTimeField()
-    registration_status = models.CharField(max_length=50)
+    delivery_accountable_party = models.CharField(max_length=8, null=True)
+    quality_regime = models.CharField(max_length=50, null=True)
+    name = models.CharField(max_length=100, null=True)
+    delivery_context = models.CharField(max_length=100, null=True)
+    monitoring_purpose = models.CharField(max_length=100, null=True)
+    groundwater_aspect = models.CharField(max_length=100, null=True)
+    start_date_monitoring = models.DateField(null=True)
+    object_registration_time = models.DateTimeField(null=True)
+    registration_status = models.CharField(max_length=50, null=True)
 
     def __str__(self):
         return self.bro_id
@@ -46,11 +46,11 @@ class Measuringpoint(models.Model):
     updated_at = models.DateTimeField(auto_now=True)
     data_owner = models.ForeignKey(Organisation, on_delete=models.CASCADE)
     gmn = models.ForeignKey(GMN, on_delete=models.CASCADE)
-    measuringpoint_code = models.CharField(max_length=50)
-    measuringpoint_start_date = models.DateField()
-    gmw_bro_id = models.CharField(max_length=50)
-    tube_number = models.CharField(max_length=50)
-    tube_start_date = models.DateField()
+    measuringpoint_code = models.CharField(max_length=50, null=True)
+    measuringpoint_start_date = models.DateField(null=True)
+    gmw_bro_id = models.CharField(max_length=50, null=True)
+    tube_number = models.CharField(max_length=50, null=True)
+    tube_start_date = models.DateField(null=True)
 
     def __str__(self):
         return self.measuringpoint_code
diff --git a/gmw/migrations/0008_alter_monitoringtube_tube_top_diameter.py b/gmw/migrations/0008_alter_monitoringtube_tube_top_diameter.py
new file mode 100644
index 0000000..c81c477
--- /dev/null
+++ b/gmw/migrations/0008_alter_monitoringtube_tube_top_diameter.py
@@ -0,0 +1,17 @@
+# Generated by Django 5.0.1 on 2024-03-14 19:13
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("gmw", "0007_alter_gmw_construction_standard_alter_gmw_data_owner_and_more"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="monitoringtube",
+            name="tube_top_diameter",
+            field=models.CharField(max_length=100, null=True),
+        ),
+    ]
diff --git a/gmw/migrations/0009_alter_gmw_well_stability.py b/gmw/migrations/0009_alter_gmw_well_stability.py
new file mode 100644
index 0000000..b275f1f
--- /dev/null
+++ b/gmw/migrations/0009_alter_gmw_well_stability.py
@@ -0,0 +1,17 @@
+# Generated by Django 5.0.1 on 2024-03-14 19:22
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("gmw", "0008_alter_monitoringtube_tube_top_diameter"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="gmw",
+            name="well_stability",
+            field=models.CharField(max_length=100, null=True),
+        ),
+    ]
diff --git a/gmw/migrations/0010_alter_gmw_construction_standard_and_more.py b/gmw/migrations/0010_alter_gmw_construction_standard_and_more.py
new file mode 100644
index 0000000..4364ea6
--- /dev/null
+++ b/gmw/migrations/0010_alter_gmw_construction_standard_and_more.py
@@ -0,0 +1,207 @@
+# Generated by Django 5.0.1 on 2024-03-14 19:39
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("gmw", "0009_alter_gmw_well_stability"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="gmw",
+            name="construction_standard",
+            field=models.CharField(max_length=100, null=True),
+        ),
+        migrations.AlterField(
+            model_name="gmw",
+            name="delivered_location",
+            field=models.CharField(max_length=100, null=True),
+        ),
+        migrations.AlterField(
+            model_name="gmw",
+            name="delivery_accountable_party",
+            field=models.CharField(max_length=8, null=True),
+        ),
+        migrations.AlterField(
+            model_name="gmw",
+            name="delivery_context",
+            field=models.CharField(max_length=100, null=True),
+        ),
+        migrations.AlterField(
+            model_name="gmw",
+            name="ground_level_position",
+            field=models.CharField(max_length=100, null=True),
+        ),
+        migrations.AlterField(
+            model_name="gmw",
+            name="ground_level_positioning_method",
+            field=models.CharField(max_length=100, null=True),
+        ),
+        migrations.AlterField(
+            model_name="gmw",
+            name="ground_level_stable",
+            field=models.CharField(max_length=100, null=True),
+        ),
+        migrations.AlterField(
+            model_name="gmw",
+            name="initial_function",
+            field=models.CharField(max_length=100, null=True),
+        ),
+        migrations.AlterField(
+            model_name="gmw",
+            name="local_vertical_reference_point",
+            field=models.CharField(max_length=100, null=True),
+        ),
+        migrations.AlterField(
+            model_name="gmw",
+            name="nitg_code",
+            field=models.CharField(max_length=100, null=True),
+        ),
+        migrations.AlterField(
+            model_name="gmw",
+            name="object_registration_time",
+            field=models.DateTimeField(null=True),
+        ),
+        migrations.AlterField(
+            model_name="gmw",
+            name="offset",
+            field=models.CharField(max_length=100, null=True),
+        ),
+        migrations.AlterField(
+            model_name="gmw",
+            name="owner",
+            field=models.CharField(max_length=100, null=True),
+        ),
+        migrations.AlterField(
+            model_name="gmw",
+            name="quality_regime",
+            field=models.CharField(max_length=50, null=True),
+        ),
+        migrations.AlterField(
+            model_name="gmw",
+            name="registration_status",
+            field=models.CharField(max_length=50, null=True),
+        ),
+        migrations.AlterField(
+            model_name="gmw",
+            name="removed",
+            field=models.CharField(max_length=100, null=True),
+        ),
+        migrations.AlterField(
+            model_name="gmw",
+            name="standardized_location",
+            field=models.CharField(max_length=100, null=True),
+        ),
+        migrations.AlterField(
+            model_name="gmw",
+            name="vertical_datum",
+            field=models.CharField(max_length=100, null=True),
+        ),
+        migrations.AlterField(
+            model_name="gmw",
+            name="well_code",
+            field=models.CharField(max_length=100, null=True),
+        ),
+        migrations.AlterField(
+            model_name="gmw",
+            name="well_head_protector",
+            field=models.CharField(max_length=100, null=True),
+        ),
+        migrations.AlterField(
+            model_name="monitoringtube",
+            name="artesian_well_cap_present",
+            field=models.CharField(max_length=100, null=True),
+        ),
+        migrations.AlterField(
+            model_name="monitoringtube",
+            name="glue",
+            field=models.CharField(max_length=100, null=True),
+        ),
+        migrations.AlterField(
+            model_name="monitoringtube",
+            name="number_of_geo_ohm_cables",
+            field=models.CharField(max_length=100, null=True),
+        ),
+        migrations.AlterField(
+            model_name="monitoringtube",
+            name="plain_tube_part_length",
+            field=models.CharField(max_length=100, null=True),
+        ),
+        migrations.AlterField(
+            model_name="monitoringtube",
+            name="screen_bottom_position",
+            field=models.CharField(max_length=100, null=True),
+        ),
+        migrations.AlterField(
+            model_name="monitoringtube",
+            name="screen_length",
+            field=models.CharField(max_length=100, null=True),
+        ),
+        migrations.AlterField(
+            model_name="monitoringtube",
+            name="screen_top_position",
+            field=models.CharField(max_length=100, null=True),
+        ),
+        migrations.AlterField(
+            model_name="monitoringtube",
+            name="sediment_sump_present",
+            field=models.CharField(max_length=100, null=True),
+        ),
+        migrations.AlterField(
+            model_name="monitoringtube",
+            name="sock_material",
+            field=models.CharField(max_length=100, null=True),
+        ),
+        migrations.AlterField(
+            model_name="monitoringtube",
+            name="tube_in_use",
+            field=models.CharField(max_length=100, null=True),
+        ),
+        migrations.AlterField(
+            model_name="monitoringtube",
+            name="tube_material",
+            field=models.CharField(max_length=100, null=True),
+        ),
+        migrations.AlterField(
+            model_name="monitoringtube",
+            name="tube_number",
+            field=models.CharField(max_length=100, null=True),
+        ),
+        migrations.AlterField(
+            model_name="monitoringtube",
+            name="tube_packing_material",
+            field=models.CharField(max_length=100, null=True),
+        ),
+        migrations.AlterField(
+            model_name="monitoringtube",
+            name="tube_part_inserted",
+            field=models.CharField(max_length=100, null=True),
+        ),
+        migrations.AlterField(
+            model_name="monitoringtube",
+            name="tube_status",
+            field=models.CharField(max_length=100, null=True),
+        ),
+        migrations.AlterField(
+            model_name="monitoringtube",
+            name="tube_top_position",
+            field=models.CharField(max_length=100, null=True),
+        ),
+        migrations.AlterField(
+            model_name="monitoringtube",
+            name="tube_top_positioning_method",
+            field=models.CharField(max_length=100, null=True),
+        ),
+        migrations.AlterField(
+            model_name="monitoringtube",
+            name="tube_type",
+            field=models.CharField(max_length=100, null=True),
+        ),
+        migrations.AlterField(
+            model_name="monitoringtube",
+            name="variable_diameter",
+            field=models.CharField(max_length=100, null=True),
+        ),
+    ]
diff --git a/gmw/models.py b/gmw/models.py
index f13e6fc..2196c06 100644
--- a/gmw/models.py
+++ b/gmw/models.py
@@ -19,31 +19,27 @@ class GMW(models.Model):
         on_delete=models.CASCADE,
     )
     bro_id = models.CharField(max_length=18)
-    delivery_accountable_party = models.CharField(max_length=8)
-    quality_regime = models.CharField(max_length=50)
-    delivery_context = models.CharField(max_length=100)
-    construction_standard = models.CharField(max_length=100)
-    initial_function = models.CharField(max_length=100)
-    removed = models.CharField(max_length=100)
-    ground_level_stable = models.CharField(max_length=100)
-    well_stability = models.CharField(max_length=100)
-    nitg_code = models.CharField(max_length=100)
-    well_code = models.CharField(max_length=100)
-    owner = models.CharField(max_length=100)
-    well_head_protector = models.CharField(max_length=100)
-    delivered_location = models.CharField(max_length=100)
-    local_vertical_reference_point = models.CharField(
-        max_length=100,
-    )
-    offset = models.CharField(max_length=100)
-    vertical_datum = models.CharField(max_length=100)
-    ground_level_position = models.CharField(max_length=100)
-    ground_level_positioning_method = models.CharField(
-        max_length=100,
-    )
-    standardized_location = models.CharField(max_length=100)
-    object_registration_time = models.DateTimeField()
-    registration_status = models.CharField(max_length=50)
+    delivery_accountable_party = models.CharField(max_length=8, null=True)
+    quality_regime = models.CharField(max_length=50, null=True)
+    delivery_context = models.CharField(max_length=100, null=True)
+    construction_standard = models.CharField(max_length=100, null=True)
+    initial_function = models.CharField(max_length=100, null=True)
+    removed = models.CharField(max_length=100, null=True)
+    ground_level_stable = models.CharField(max_length=100, null=True)
+    well_stability = models.CharField(max_length=100, null=True)
+    nitg_code = models.CharField(max_length=100, null=True)
+    well_code = models.CharField(max_length=100, null=True)
+    owner = models.CharField(max_length=100, null=True)
+    well_head_protector = models.CharField(max_length=100, null=True)
+    delivered_location = models.CharField(max_length=100, null=True)
+    local_vertical_reference_point = models.CharField(max_length=100, null=True)
+    offset = models.CharField(max_length=100, null=True)
+    vertical_datum = models.CharField(max_length=100, null=True)
+    ground_level_position = models.CharField(max_length=100, null=True)
+    ground_level_positioning_method = models.CharField(max_length=100, null=True)
+    standardized_location = models.CharField(max_length=100, null=True)
+    object_registration_time = models.DateTimeField(null=True)
+    registration_status = models.CharField(max_length=50, null=True)
 
     def __str__(self):
         return self.bro_id
@@ -63,28 +59,26 @@ class MonitoringTube(models.Model):
         on_delete=models.CASCADE,
     )
     gmw = models.ForeignKey(GMW, on_delete=models.CASCADE)
-    tube_number = models.CharField(max_length=100)
-    tube_type = models.CharField(max_length=100)
-    artesian_well_cap_present = models.CharField(max_length=100)
-    sediment_sump_present = models.CharField(max_length=100)
-    number_of_geo_ohm_cables = models.CharField(max_length=100)
-    tube_top_diameter = models.CharField(max_length=100)
-    variable_diameter = models.CharField(max_length=100)
-    tube_status = models.CharField(max_length=100)
-    tube_top_position = models.CharField(max_length=100)
-    tube_top_positioning_method = models.CharField(
-        max_length=100,
-    )
-    tube_part_inserted = models.CharField(max_length=100)
-    tube_in_use = models.CharField(max_length=100)
-    tube_packing_material = models.CharField(max_length=100)
-    tube_material = models.CharField(max_length=100)
-    glue = models.CharField(max_length=100)
-    screen_length = models.CharField(max_length=100)
-    sock_material = models.CharField(max_length=100)
-    screen_top_position = models.CharField(max_length=100)
-    screen_bottom_position = models.CharField(max_length=100)
-    plain_tube_part_length = models.CharField(max_length=100)
+    tube_number = models.CharField(max_length=100, null=True)
+    tube_type = models.CharField(max_length=100, null=True)
+    artesian_well_cap_present = models.CharField(max_length=100, null=True)
+    sediment_sump_present = models.CharField(max_length=100, null=True)
+    number_of_geo_ohm_cables = models.CharField(max_length=100, null=True)
+    tube_top_diameter = models.CharField(max_length=100, null=True)
+    variable_diameter = models.CharField(max_length=100, null=True)
+    tube_status = models.CharField(max_length=100, null=True)
+    tube_top_position = models.CharField(max_length=100, null=True)
+    tube_top_positioning_method = models.CharField(max_length=100, null=True)
+    tube_part_inserted = models.CharField(max_length=100, null=True)
+    tube_in_use = models.CharField(max_length=100, null=True)
+    tube_packing_material = models.CharField(max_length=100, null=True)
+    tube_material = models.CharField(max_length=100, null=True)
+    glue = models.CharField(max_length=100, null=True)
+    screen_length = models.CharField(max_length=100, null=True)
+    sock_material = models.CharField(max_length=100, null=True)
+    screen_top_position = models.CharField(max_length=100, null=True)
+    screen_bottom_position = models.CharField(max_length=100, null=True)
+    plain_tube_part_length = models.CharField(max_length=100, null=True)
 
     def __str__(self):
         return f"{self.gmw}-{self.tube_number}"