diff --git a/pom.xml b/pom.xml
index e0b2eab4..0f720935 100644
--- a/pom.xml
+++ b/pom.xml
@@ -18,7 +18,7 @@
         <maven.compiler.source>21</maven.compiler.source>
         <maven.compiler.target>21</maven.compiler.target>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <fhir.version>7.4.5</fhir.version>
+        <fhir.version>7.6.0</fhir.version>
         <log4j.version>2.24.2</log4j.version>
         <fasterxml.version>2.18.1</fasterxml.version>
         <sonar.organization>nhsdigital</sonar.organization>
diff --git a/src/test/resources/results/invalidBundle.json b/src/test/resources/results/invalidBundle.json
index c76f8453..84810782 100644
--- a/src/test/resources/results/invalidBundle.json
+++ b/src/test/resources/results/invalidBundle.json
@@ -216,7 +216,7 @@
                     "valueString": "Terminology_PassThrough_TX_Message"
                 }
             ],
-            "severity": "information",
+            "severity": "warning",
             "code": "processing",
             "details": {
                 "coding": [
@@ -247,7 +247,7 @@
                     "valueString": "Terminology_PassThrough_TX_Message"
                 }
             ],
-            "severity": "information",
+            "severity": "warning",
             "code": "processing",
             "details": {
                 "coding": [
diff --git a/src/test/resources/results/searchSet.json b/src/test/resources/results/searchSet.json
index b6f6c59f..2e53ede9 100644
--- a/src/test/resources/results/searchSet.json
+++ b/src/test/resources/results/searchSet.json
@@ -153,10 +153,22 @@
                 {
                     "url": "http://hl7.org/fhir/StructureDefinition/operationoutcome-issue-col",
                     "valueInteger": 499
+                },
+                {
+                    "url": "http://hl7.org/fhir/StructureDefinition/operationoutcome-message-id",
+                    "valueString": "This_element_does_not_match_any_known_slice_"
                 }
             ],
             "severity": "information",
             "code": "processing",
+            "details": {
+                "coding": [
+                    {
+                        "system": "http://hl7.org/fhir/java-core-messageId",
+                        "code": "This_element_does_not_match_any_known_slice_"
+                    }
+                ]
+            },
             "diagnostics": "This element does not match any known slice defined in the profile https://fhir.nhs.uk/StructureDefinition/NHSDigital-MedicationRequest-CodeableConcept (this may not be a problem, but you should check that it's not intended to match a slice) - Bundle.entry[0].resource/*MedicationRequest/null*/.medication.ofType(CodeableConcept).coding[0]: Does not match slice 'SNOMED' (discriminator: ('http://snomed.info/sct' in system))",
             "location": [
                 "Bundle.entry[0].resource/*MedicationRequest/null*/.medication.ofType(CodeableConcept).coding[0]",
@@ -501,10 +513,22 @@
                 {
                     "url": "http://hl7.org/fhir/StructureDefinition/operationoutcome-issue-col",
                     "valueInteger": 1598
+                },
+                {
+                    "url": "http://hl7.org/fhir/StructureDefinition/operationoutcome-message-id",
+                    "valueString": "This_element_does_not_match_any_known_slice_"
                 }
             ],
             "severity": "information",
             "code": "processing",
+            "details": {
+                "coding": [
+                    {
+                        "system": "http://hl7.org/fhir/java-core-messageId",
+                        "code": "This_element_does_not_match_any_known_slice_"
+                    }
+                ]
+            },
             "diagnostics": "This element does not match any known slice defined in the profile https://fhir.nhs.uk/StructureDefinition/NHSDigital-MedicationRequest-CodeableConcept (this may not be a problem, but you should check that it's not intended to match a slice) - Bundle.entry[1].resource/*MedicationRequest/null*/.medication.ofType(CodeableConcept).coding[0]: Does not match slice 'SNOMED' (discriminator: ('http://snomed.info/sct' in system))",
             "location": [
                 "Bundle.entry[1].resource/*MedicationRequest/null*/.medication.ofType(CodeableConcept).coding[0]",
@@ -849,10 +873,22 @@
                 {
                     "url": "http://hl7.org/fhir/StructureDefinition/operationoutcome-issue-col",
                     "valueInteger": 2710
+                },
+                {
+                    "url": "http://hl7.org/fhir/StructureDefinition/operationoutcome-message-id",
+                    "valueString": "This_element_does_not_match_any_known_slice_"
                 }
             ],
             "severity": "information",
             "code": "processing",
+            "details": {
+                "coding": [
+                    {
+                        "system": "http://hl7.org/fhir/java-core-messageId",
+                        "code": "This_element_does_not_match_any_known_slice_"
+                    }
+                ]
+            },
             "diagnostics": "This element does not match any known slice defined in the profile https://fhir.nhs.uk/StructureDefinition/NHSDigital-MedicationRequest-CodeableConcept (this may not be a problem, but you should check that it's not intended to match a slice) - Bundle.entry[2].resource/*MedicationRequest/null*/.medication.ofType(CodeableConcept).coding[0]: Does not match slice 'SNOMED' (discriminator: ('http://snomed.info/sct' in system))",
             "location": [
                 "Bundle.entry[2].resource/*MedicationRequest/null*/.medication.ofType(CodeableConcept).coding[0]",
@@ -1197,10 +1233,22 @@
                 {
                     "url": "http://hl7.org/fhir/StructureDefinition/operationoutcome-issue-col",
                     "valueInteger": 3810
+                },
+                {
+                    "url": "http://hl7.org/fhir/StructureDefinition/operationoutcome-message-id",
+                    "valueString": "This_element_does_not_match_any_known_slice_"
                 }
             ],
             "severity": "information",
             "code": "processing",
+            "details": {
+                "coding": [
+                    {
+                        "system": "http://hl7.org/fhir/java-core-messageId",
+                        "code": "This_element_does_not_match_any_known_slice_"
+                    }
+                ]
+            },
             "diagnostics": "This element does not match any known slice defined in the profile https://fhir.nhs.uk/StructureDefinition/NHSDigital-MedicationRequest-CodeableConcept (this may not be a problem, but you should check that it's not intended to match a slice) - Bundle.entry[3].resource/*MedicationRequest/null*/.medication.ofType(CodeableConcept).coding[0]: Does not match slice 'SNOMED' (discriminator: ('http://snomed.info/sct' in system))",
             "location": [
                 "Bundle.entry[3].resource/*MedicationRequest/null*/.medication.ofType(CodeableConcept).coding[0]",
@@ -1621,10 +1669,22 @@
                 {
                     "url": "http://hl7.org/fhir/StructureDefinition/operationoutcome-issue-col",
                     "valueInteger": 495
+                },
+                {
+                    "url": "http://hl7.org/fhir/StructureDefinition/operationoutcome-message-id",
+                    "valueString": "This_element_does_not_match_any_known_slice_"
                 }
             ],
             "severity": "information",
             "code": "processing",
+            "details": {
+                "coding": [
+                    {
+                        "system": "http://hl7.org/fhir/java-core-messageId",
+                        "code": "This_element_does_not_match_any_known_slice_"
+                    }
+                ]
+            },
             "diagnostics": "This element does not match any known slice defined in the profile https://fhir.nhs.uk/StructureDefinition/NHSDigital-MedicationRequest-CodeableConcept (this may not be a problem, but you should check that it's not intended to match a slice) - Bundle.entry[0].resource/*MedicationRequest/null*/.medication.ofType(CodeableConcept).coding[0]: Does not match slice 'SNOMED' (discriminator: ('http://snomed.info/sct' in system))",
             "location": [
                 "Bundle.entry[0].resource/*MedicationRequest/null*/.medication.ofType(CodeableConcept).coding[0]",
@@ -2048,10 +2108,22 @@
                 {
                     "url": "http://hl7.org/fhir/StructureDefinition/operationoutcome-issue-col",
                     "valueInteger": 499
+                },
+                {
+                    "url": "http://hl7.org/fhir/StructureDefinition/operationoutcome-message-id",
+                    "valueString": "This_element_does_not_match_any_known_slice_"
                 }
             ],
             "severity": "information",
             "code": "processing",
+            "details": {
+                "coding": [
+                    {
+                        "system": "http://hl7.org/fhir/java-core-messageId",
+                        "code": "This_element_does_not_match_any_known_slice_"
+                    }
+                ]
+            },
             "diagnostics": "This element does not match any known slice defined in the profile https://fhir.nhs.uk/StructureDefinition/NHSDigital-MedicationRequest-CodeableConcept (this may not be a problem, but you should check that it's not intended to match a slice) - Bundle.entry[0].resource/*MedicationRequest/null*/.medication.ofType(CodeableConcept).coding[0]: Does not match slice 'SNOMED' (discriminator: ('http://snomed.info/sct' in system))",
             "location": [
                 "Bundle.entry[0].resource/*MedicationRequest/null*/.medication.ofType(CodeableConcept).coding[0]",
diff --git a/src/test/resources/results/validBundle.json b/src/test/resources/results/validBundle.json
index 2ea8c06c..d16c7f91 100644
--- a/src/test/resources/results/validBundle.json
+++ b/src/test/resources/results/validBundle.json
@@ -135,7 +135,7 @@
                     "valueString": "Terminology_PassThrough_TX_Message"
                 }
             ],
-            "severity": "information",
+            "severity": "warning",
             "code": "processing",
             "details": {
                 "coding": [
@@ -266,7 +266,7 @@
                     "valueString": "Terminology_PassThrough_TX_Message"
                 }
             ],
-            "severity": "information",
+            "severity": "warning",
             "code": "processing",
             "details": {
                 "coding": [
@@ -397,7 +397,7 @@
                     "valueString": "Terminology_PassThrough_TX_Message"
                 }
             ],
-            "severity": "information",
+            "severity": "warning",
             "code": "processing",
             "details": {
                 "coding": [
@@ -528,7 +528,7 @@
                     "valueString": "Terminology_PassThrough_TX_Message"
                 }
             ],
-            "severity": "information",
+            "severity": "warning",
             "code": "processing",
             "details": {
                 "coding": [