diff --git a/Protocol/Error Messages/Protocol/Params/Param/Display/Decimals/CheckDecimalsTag.cs b/Protocol/Error Messages/Protocol/Params/Param/Display/Decimals/CheckDecimalsTag.cs
new file mode 100644
index 0000000..318831b
--- /dev/null
+++ b/Protocol/Error Messages/Protocol/Params/Param/Display/Decimals/CheckDecimalsTag.cs	
@@ -0,0 +1,56 @@
+// <auto-generated>This is auto-generated code by Validator Management Tool. Do not modify.</auto-generated>
+namespace Skyline.DataMiner.CICD.Validators.Protocol.Tests.Protocol.Params.Param.Display.Decimals.CheckDecimalsTag
+{
+    using System;
+    using System.Collections.Generic;
+
+    using Skyline.DataMiner.CICD.Models.Protocol.Read;
+    using Skyline.DataMiner.CICD.Validators.Common.Interfaces;
+    using Skyline.DataMiner.CICD.Validators.Common.Model;
+    using Skyline.DataMiner.CICD.Validators.Protocol.Common;
+    using Skyline.DataMiner.CICD.Validators.Protocol.Interfaces;
+
+    internal static class Error
+    {
+        public static IValidationResult InvalidTagForDateTime(IValidate test, IReadable referenceNode, IReadable positionNode, string paramId)
+        {
+            return new ValidationResult
+            {
+                Test = test,
+                CheckId = CheckId.CheckDecimalsTag,
+                ErrorId = ErrorIds.InvalidTagForDateTime,
+                FullId = "2.75.1",
+                Category = Category.Param,
+                Severity = Severity.Major,
+                Certainty = Certainty.Certain,
+                Source = Source.Validator,
+                FixImpact = FixImpact.NonBreaking,
+                GroupDescription = "",
+                Description = String.Format("Missing tag '{0}' with expected value '{1}' for {2} '{3}'.", "Display/Decimals", "8", "Param", paramId),
+                HowToFix = "Add a Protocol/Params/Param/Display/Decimals tag with value 8.",
+                ExampleCode = "<Display>" + Environment.NewLine + "   <RTDisplay>true</RTDisplay>" + Environment.NewLine + "   <Decimals>8</Decimals>" + Environment.NewLine + "</Display>" + Environment.NewLine + "<Measurement>" + Environment.NewLine + "   <Type options=\"datetime\">number</Type>" + Environment.NewLine + "</Measurement>",
+                Details = "By default, only 6 decimals are saved in memory. Parameters holding datetime values need at least 8 decimals to be accurate." + Environment.NewLine + "Otherwise, there might be rounding issues when retrieving the parameter from an external source like an Automation script.",
+                HasCodeFix = false,
+
+                PositionNode = positionNode,
+                ReferenceNode = referenceNode,
+            };
+        }
+    }
+
+    internal static class ErrorIds
+    {
+        public const uint InvalidTagForDateTime = 1;
+    }
+
+    /// <summary>
+    /// Contains the identifiers of the checks.
+    /// </summary>
+    public static class CheckId
+    {
+        /// <summary>
+        /// The check identifier.
+        /// </summary>
+        public const uint CheckDecimalsTag = 75;
+    }
+}
\ No newline at end of file
diff --git a/Protocol/ErrorMessages.xml b/Protocol/ErrorMessages.xml
index b5df2b7..6f87a96 100644
--- a/Protocol/ErrorMessages.xml
+++ b/Protocol/ErrorMessages.xml
@@ -9643,6 +9643,31 @@
 							</ErrorMessage>
 						</ErrorMessages>
 					</Check>
+					<Check id="75">
+						<Name namespace="Protocol.Params.Param.Display.Decimals">CheckDecimalsTag</Name>
+						<ErrorMessages>
+							<ErrorMessage id="1">
+								<Name>InvalidTagForDateTime</Name>
+								<GroupDescription />
+								<Description templateId="1010">
+									<InputParameters>
+										<InputParameter id="0" value="Display/Decimals">tagName</InputParameter>
+										<InputParameter id="1" value="8">expectedValue</InputParameter>
+										<InputParameter id="2" value="Param">itemKind</InputParameter>
+										<InputParameter id="3">paramId</InputParameter>
+									</InputParameters>
+								</Description>
+								<Severity>Major</Severity>
+								<Certainty>Certain</Certainty>
+								<Source>Validator</Source>
+								<FixImpact>NonBreaking</FixImpact>
+								<HasCodeFix>False</HasCodeFix>
+								<HowToFix><![CDATA[Add a Protocol/Params/Param/Display/Decimals tag with value 8.]]></HowToFix>
+								<ExampleCode><![CDATA[<Display>[NewLine]   <RTDisplay>true</RTDisplay>[NewLine]   <Decimals>8</Decimals>[NewLine]</Display>[NewLine]<Measurement>[NewLine]   <Type options="datetime">number</Type>[NewLine]</Measurement>]]></ExampleCode>
+								<Details><![CDATA[By default, only 6 decimals are saved in memory. Parameters holding datetime values need at least 8 decimals to be accurate.[NewLine]Otherwise, there might be rounding issues when retrieving the parameter from an external source like an Automation script.]]></Details>
+							</ErrorMessage>
+						</ErrorMessages>
+					</Check>
 				</Checks>
 			</Category>
 			<Category id="3">
diff --git a/Protocol/Tests/Protocol/Params/Param/Display/Decimals/CheckDecimalsTag.cs b/Protocol/Tests/Protocol/Params/Param/Display/Decimals/CheckDecimalsTag.cs
new file mode 100644
index 0000000..e5a8a6d
--- /dev/null
+++ b/Protocol/Tests/Protocol/Params/Param/Display/Decimals/CheckDecimalsTag.cs
@@ -0,0 +1,70 @@
+namespace Skyline.DataMiner.CICD.Validators.Protocol.Tests.Protocol.Params.Param.Display.Decimals.CheckDecimalsTag
+{
+    using System;
+    using System.Collections.Generic;
+
+    using Skyline.DataMiner.CICD.Models.Protocol.Read;
+    using Skyline.DataMiner.CICD.Validators.Common.Interfaces;
+    using Skyline.DataMiner.CICD.Validators.Common.Model;
+    using Skyline.DataMiner.CICD.Validators.Protocol.Common;
+    using Skyline.DataMiner.CICD.Validators.Protocol.Common.Attributes;
+    using Skyline.DataMiner.CICD.Validators.Protocol.Common.Extensions;
+    using Skyline.DataMiner.CICD.Validators.Protocol.Interfaces;
+
+    [Test(CheckId.CheckDecimalsTag, Category.Param)]
+    internal class CheckDecimalsTag : IValidate/*, ICodeFix, ICompare*/
+    {
+        // Please comment out the interfaces that aren't used together with the respective methods.
+
+        public List<IValidationResult> Validate(ValidatorContext context)
+        {
+            List<IValidationResult> results = new List<IValidationResult>();
+
+            foreach (var param in context.EachParamWithValidId())
+            {
+                var displayTag = param.Display;
+
+                // Early return pattern. Only check when there is a Display tag.
+                if (displayTag == null) continue;
+
+                // Only check number types.
+                if (!param.IsNumber()) continue;
+
+                // Only check if date or datetime parameter
+                if (!param.IsDateTime()) continue;
+
+                // Verify valid decimals.
+                var decimalsTag = param.Display?.Decimals;
+                if (decimalsTag?.Value != 8)
+                {
+                    var positionNode = decimalsTag ?? (IReadable)displayTag;
+                    results.Add(Error.InvalidTagForDateTime(this, param, positionNode, param.Id.RawValue));
+                }
+            }
+
+            return results;
+        }
+
+        public ICodeFixResult Fix(CodeFixContext context)
+        {
+            CodeFixResult result = new CodeFixResult();
+
+            switch (context.Result.ErrorId)
+            {
+
+                default:
+                    result.Message = $"This error ({context.Result.ErrorId}) isn't implemented.";
+                    break;
+            }
+
+            return result;
+        }
+        
+        public List<IValidationResult> Compare(MajorChangeCheckContext context)
+        {
+            List<IValidationResult> results = new List<IValidationResult>();
+
+            return results;
+        }
+    }
+}
\ No newline at end of file
diff --git a/ProtocolTests/Protocol/Params/Param/Display/Decimals/CheckDecimalsTag/CheckDecimalsTag.cs b/ProtocolTests/Protocol/Params/Param/Display/Decimals/CheckDecimalsTag/CheckDecimalsTag.cs
new file mode 100644
index 0000000..39ab3d2
--- /dev/null
+++ b/ProtocolTests/Protocol/Params/Param/Display/Decimals/CheckDecimalsTag/CheckDecimalsTag.cs
@@ -0,0 +1,95 @@
+namespace ProtocolTests.Protocol.Params.Param.Display.Decimals.CheckDecimalsTag
+{
+    using System;
+    using System.Collections.Generic;
+
+    using FluentAssertions;
+
+    using Microsoft.VisualStudio.TestTools.UnitTesting;
+    
+    using Skyline.DataMiner.CICD.Validators.Common.Interfaces;
+    using Skyline.DataMiner.CICD.Validators.Common.Model;
+    using Skyline.DataMiner.CICD.Validators.Protocol.Common;
+    using Skyline.DataMiner.CICD.Validators.Protocol.Interfaces;
+    using Skyline.DataMiner.CICD.Validators.Protocol.Tests.Protocol.Params.Param.Display.Decimals.CheckDecimalsTag;
+
+    [TestClass]
+    public class Validate
+    {
+        private readonly IValidate check = new CheckDecimalsTag();
+
+        #region Valid Checks
+
+        [TestMethod]
+        public void Param_CheckDecimalsTag_Valid()
+        {
+            Generic.ValidateData data = new Generic.ValidateData
+            {
+                TestType = Generic.TestType.Valid,
+                FileName = "Valid",
+                ExpectedResults = new List<IValidationResult>()
+            };
+
+            Generic.Validate(check, data);
+        }
+
+        #endregion
+
+        #region Invalid Checks
+
+        [TestMethod]
+        public void Param_CheckDecimalsTag_InvalidTagForDateTime()
+        {
+            Generic.ValidateData data = new Generic.ValidateData
+            {
+                TestType = Generic.TestType.Invalid,
+                FileName = "InvalidTagForDateTime",
+                ExpectedResults = new List<IValidationResult>
+                {
+                    Error.InvalidTagForDateTime(null, null, null, "10"),
+                }
+            };
+
+            Generic.Validate(check, data);
+        }
+
+        #endregion
+    }
+
+    [TestClass]
+    public class ErrorMessages
+    {
+        [TestMethod]
+        public void Param_CheckDecimalsTag_InvalidTagForDateTime()
+        {
+            // Create ErrorMessage
+            var message = Error.InvalidTagForDateTime(null, null, null, "paramId");
+                        
+            var expected = new ValidationResult
+            {
+                Severity = Severity.Major,
+                Certainty = Certainty.Certain,
+                FixImpact = FixImpact.NonBreaking,
+                GroupDescription = "",
+                Description = "Missing tag 'Display/Decimals' with expected value '8' for Param 'paramId'.",
+                Details = "By default, only 6 decimals are saved in memory. Parameters holding datetime values need at least 8 decimals to be accurate." + Environment.NewLine + "Otherwise, there might be rounding issues when retrieving the parameter from an external source like an Automation script.",
+                HasCodeFix = false,
+            };
+
+            // Assert
+            message.Should().BeEquivalentTo(expected, Generic.ExcludePropertiesForErrorMessages);
+        }
+    }
+
+    [TestClass]
+    public class Attribute
+    {
+        private readonly IRoot check = new CheckDecimalsTag();
+
+        [TestMethod]
+        public void Param_CheckDecimalsTag_CheckCategory() => Generic.CheckCategory(check, Category.Param);
+
+        [TestMethod]
+        public void Param_CheckDecimalsTag_CheckId() => Generic.CheckId(check, CheckId.CheckDecimalsTag);
+    }
+}
\ No newline at end of file
diff --git a/ProtocolTests/Protocol/Params/Param/Display/Decimals/CheckDecimalsTag/Samples/Validate/Invalid/InvalidTagForDateTime.xml b/ProtocolTests/Protocol/Params/Param/Display/Decimals/CheckDecimalsTag/Samples/Validate/Invalid/InvalidTagForDateTime.xml
new file mode 100644
index 0000000..b89af5a
--- /dev/null
+++ b/ProtocolTests/Protocol/Params/Param/Display/Decimals/CheckDecimalsTag/Samples/Validate/Invalid/InvalidTagForDateTime.xml
@@ -0,0 +1,12 @@
+<Protocol xmlns="http://www.skyline.be/validatorProtocolUnitTest">
+	<Params>
+		<Param id="10">
+			<Display>
+				<RTDisplay>true</RTDisplay>
+			</Display>
+			<Measurement>
+				<Type options="datetime">number</Type>
+			</Measurement>
+		</Param>
+	</Params>
+</Protocol>
diff --git a/ProtocolTests/Protocol/Params/Param/Display/Decimals/CheckDecimalsTag/Samples/Validate/Valid/Valid.xml b/ProtocolTests/Protocol/Params/Param/Display/Decimals/CheckDecimalsTag/Samples/Validate/Valid/Valid.xml
new file mode 100644
index 0000000..5b91d3e
--- /dev/null
+++ b/ProtocolTests/Protocol/Params/Param/Display/Decimals/CheckDecimalsTag/Samples/Validate/Valid/Valid.xml
@@ -0,0 +1,13 @@
+<Protocol xmlns="http://www.skyline.be/validatorProtocolUnitTest">
+	<Params>
+		<Param id="10">
+			<Display>
+				<RTDisplay>true</RTDisplay>
+				<Decimals>8</Decimals>
+			</Display>
+			<Measurement>
+				<Type options="datetime">number</Type>
+			</Measurement>
+		</Param>
+	</Params>
+</Protocol>