diff --git a/postman_collection.json b/postman_collection.json
index 8bea56f56..36c3f49b9 100644
--- a/postman_collection.json
+++ b/postman_collection.json
@@ -54,7 +54,7 @@
             ],
             "body": {
               "mode": "raw",
-              "raw": "{\n  \"status\": \"current\",\n  \"type\": {\n    \"coding\": [\n      {\n        \"code\": \"736253002\",\n        \"display\": \"Mental health crisis plan\",\n        \"system\": \"http://snomed.info/sct\"\n      }\n    ]\n  },\n  \"category\": [\n    {\n      \"coding\": [\n        {\n          \"code\": \"734163000\",\n          \"display\": \"Care plan\",\n          \"system\": \"http://snomed.info/sct\"\n        }\n      ]\n    }\n  ],\n  \"subject\": {\n    \"identifier\": {\n      \"value\": \"3495456481\",\n      \"system\": \"https://fhir.nhs.uk/Id/nhs-number\"\n    }\n  },\n  \"date\": \"2024-10-29T13:23:28+00:00\",\n  \"author\": [\n    {\n      \"identifier\": {\n        \"value\": \"Y05868\",\n        \"system\": \"https://fhir.nhs.uk/Id/ods-organization-code\"\n      }\n    }\n  ],\n  \"custodian\": {\n    \"identifier\": {\n      \"value\": \"Y05868\",\n      \"system\": \"https://fhir.nhs.uk/Id/ods-organization-code\"\n    }\n  },\n  \"content\": [\n    {\n      \"attachment\": {\n        \"contentType\": \"application/pdf\",\n        \"language\": \"en-US\",\n        \"url\": \"https://example.org/my-doc.pdf\",\n        \"creation\": \"2024-10-28T15:26:00+01:00\",\n        \"hash\": \"2jmj7l5rSw0yVb/vlWAYkK/YBwk=\",\n        \"title\": \"Physical\",\n        \"size\":\"1000\"\n      },\n      \"format\": {\n        \"code\": \"urn:nhs-ic:unstructured\",\n        \"display\": \"Unstructured Document\",\n        \"system\": \"https://fhir.nhs.uk/STU3/CodeSystem/NRL-FormatCode-1\"\n      }\n    }\n  ],\n  \"context\": {\n    \"period\": {\n      \"start\": \"2024-03-06T13:34:00+01:00\",\n      \"end\":\"2026-03-06T13:34:00+01:00\"\n    },\n    \"practiceSetting\": {\n      \"coding\": [\n        {\n          \"code\": \"708168004\",\n          \"display\": \"Mental health service (qualifier value)\",\n          \"system\": \"http://snomed.info/sct\"\n        }\n      ]\n    },\n    \"related\": [\n        {\n            \"identifier\": {\n                \"system\": \"https://fhir.nhs.uk/Id/nhsSpineASID\",\n                \"value\": \"200000001991\"\n            }\n        }\n    ]\n  },\n  \"resourceType\": \"DocumentReference\"\n}",
+              "raw": "{\n  \"status\": \"current\",\n  \"type\": {\n    \"coding\": [\n      {\n        \"code\": \"736253002\",\n        \"display\": \"Mental health crisis plan\",\n        \"system\": \"http://snomed.info/sct\"\n      }\n    ]\n  },\n  \"category\": [\n    {\n      \"coding\": [\n        {\n          \"code\": \"734163000\",\n          \"display\": \"Care plan\",\n          \"system\": \"http://snomed.info/sct\"\n        }\n      ]\n    }\n  ],\n  \"subject\": {\n    \"identifier\": {\n      \"value\": \"3495456481\",\n      \"system\": \"https://fhir.nhs.uk/Id/nhs-number\"\n    }\n  },\n  \"date\": \"2024-10-29T13:23:28+00:00\",\n  \"author\": [\n    {\n      \"identifier\": {\n        \"value\": \"Y05868\",\n        \"system\": \"https://fhir.nhs.uk/Id/ods-organization-code\"\n      }\n    }\n  ],\n  \"custodian\": {\n    \"identifier\": {\n      \"value\": \"Y05868\",\n      \"system\": \"https://fhir.nhs.uk/Id/ods-organization-code\"\n    }\n  },\n  \"content\": [\n    {\n      \"attachment\": {\n        \"contentType\": \"application/pdf\",\n        \"language\": \"en-US\",\n        \"url\": \"https://example.org/my-doc.pdf\",\n        \"creation\": \"2024-10-28T15:26:00+01:00\",\n        \"hash\": \"2jmj7l5rSw0yVb/vlWAYkK/YBwk=\",\n        \"title\": \"Physical\",\n        \"size\":\"1000\"\n      },\n      \"format\": {\n        \"code\": \"urn:nhs-ic:unstructured\",\n        \"display\": \"Unstructured Document\",\n        \"system\": \"https://fhir.nhs.uk/England/CodeSystem/England-NRLFormatCode\"\n      },\n      \"extension\": [\n        {\n        \"url\": \"https://fhir.nhs.uk/England/StructureDefinition/Extension-England-ContentStability\",\n        \"valueCodeableConcept\": {\n            \"coding\": [\n                    {\n                    \"system\": \"https://fhir.nhs.uk/England/CodeSystem/England-NRLContentStability\",\n                    \"code\": \"static\",\n                    \"display\": \"Static\"\n                    }\n                ]\n            }\n        }\n        ]\n    }\n  ],\n  \"context\": {\n    \"period\": {\n      \"start\": \"2024-03-06T13:34:00+01:00\",\n      \"end\":\"2026-03-06T13:34:00+01:00\"\n    },\n    \"practiceSetting\": {\n      \"coding\": [\n            {\n                \"system\": \"http://snomed.info/sct\",\n                \"code\": \"788002001\",\n                \"display\": \"Adult mental health service\"\n            }\n      ]\n    },\n    \"related\": [\n        {\n            \"identifier\": {\n                \"system\": \"https://fhir.nhs.uk/Id/nhsSpineASID\",\n                \"value\": \"200000001991\"\n            }\n        }\n    ]\n  },\n  \"resourceType\": \"DocumentReference\"\n}",
               "options": {
                 "raw": {
                   "language": "json"
@@ -119,7 +119,7 @@
             ],
             "body": {
               "mode": "raw",
-              "raw": "{\n  \"status\": \"current\",\n  \"type\": {\n    \"coding\": [\n      {\n        \"code\": \"736253002\",\n        \"display\": \"Mental health crisis plan\",\n        \"system\": \"http://snomed.info/sct\"\n      }\n    ]\n  },\n    \"relatesTo\": [\n        {\n        \"code\": \"replaces\",\n        \"target\": {\n            \"type\": \"DocumentReference\",\n            \"identifier\": {\n            \"value\": \"Y05868-26b5c8bf-864b-4eb1-928f-4bafb6d9b7b8\"\n                }\n            }\n        }\n    ],\n  \"category\": [\n    {\n      \"coding\": [\n        {\n          \"code\": \"734163000\",\n          \"display\": \"Care plan\",\n          \"system\": \"http://snomed.info/sct\"\n        }\n      ]\n    }\n  ],\n  \"subject\": {\n    \"identifier\": {\n      \"value\": \"3495456481\",\n      \"system\": \"https://fhir.nhs.uk/Id/nhs-number\"\n    }\n  },\n  \"date\": \"2024-10-29T13:23:28+00:00\",\n  \"author\": [\n    {\n      \"identifier\": {\n        \"value\": \"Y05868\",\n        \"system\": \"https://fhir.nhs.uk/Id/ods-organization-code\"\n      }\n    }\n  ],\n  \"custodian\": {\n    \"identifier\": {\n      \"value\": \"Y05868\",\n      \"system\": \"https://fhir.nhs.uk/Id/ods-organization-code\"\n    }\n  },\n  \"content\": [\n    {\n      \"attachment\": {\n        \"contentType\": \"application/pdf\",\n        \"language\": \"en-US\",\n        \"url\": \"https://example.org/my-doc.pdf\",\n        \"creation\": \"2024-10-28T15:26:00+01:00\",\n        \"hash\": \"2jmj7l5rSw0yVb/vlWAYkK/YBwk=\",\n        \"title\": \"Physical\",\n        \"size\":\"1000\"\n      },\n      \"format\": {\n        \"code\": \"urn:nhs-ic:unstructured\",\n        \"display\": \"Unstructured Document\",\n        \"system\": \"https://fhir.nhs.uk/STU3/CodeSystem/NRL-FormatCode-1\"\n      }\n    }\n  ],\n  \"context\": {\n    \"period\": {\n      \"start\": \"2024-03-06T13:34:00+01:00\",\n      \"end\":\"2026-03-06T13:34:00+01:00\"\n    },\n    \"practiceSetting\": {\n      \"coding\": [\n        {\n          \"code\": \"708168004\",\n          \"display\": \"Mental health service (qualifier value)\",\n          \"system\": \"http://snomed.info/sct\"\n        }\n      ]\n    },\n    \"related\": [\n        {\n            \"identifier\": {\n                \"system\": \"https://fhir.nhs.uk/Id/nhsSpineASID\",\n                \"value\": \"200000001991\"\n            }\n        }\n    ]\n  },\n  \"resourceType\": \"DocumentReference\"\n}",
+              "raw": "{\n  \"status\": \"current\",\n  \"type\": {\n    \"coding\": [\n      {\n        \"code\": \"736253002\",\n        \"display\": \"Mental health crisis plan\",\n        \"system\": \"http://snomed.info/sct\"\n      }\n    ]\n  },\n    \"relatesTo\": [\n        {\n        \"code\": \"replaces\",\n        \"target\": {\n            \"type\": \"DocumentReference\",\n            \"identifier\": {\n            \"value\": \"Y05868-98dbebaf-c32d-4771-b5ac-f0610a024c31\"\n                }\n            }\n        }\n    ],\n  \"category\": [\n    {\n      \"coding\": [\n        {\n          \"code\": \"734163000\",\n          \"display\": \"Care plan\",\n          \"system\": \"http://snomed.info/sct\"\n        }\n      ]\n    }\n  ],\n  \"subject\": {\n    \"identifier\": {\n      \"value\": \"3495456481\",\n      \"system\": \"https://fhir.nhs.uk/Id/nhs-number\"\n    }\n  },\n  \"date\": \"2024-10-29T13:23:28+00:00\",\n  \"author\": [\n    {\n      \"identifier\": {\n        \"value\": \"Y05868\",\n        \"system\": \"https://fhir.nhs.uk/Id/ods-organization-code\"\n      }\n    }\n  ],\n  \"custodian\": {\n    \"identifier\": {\n      \"value\": \"Y05868\",\n      \"system\": \"https://fhir.nhs.uk/Id/ods-organization-code\"\n    }\n  },\n  \"content\": [\n    {\n      \"attachment\": {\n        \"contentType\": \"application/pdf\",\n        \"language\": \"en-US\",\n        \"url\": \"https://example.org/my-doc.pdf\",\n        \"creation\": \"2024-10-28T15:26:00+01:00\",\n        \"hash\": \"2jmj7l5rSw0yVb/vlWAYkK/YBwk=\",\n        \"title\": \"Physical\",\n        \"size\":\"1000\"\n      },\n      \"format\": {\n        \"code\": \"urn:nhs-ic:unstructured\",\n        \"display\": \"Unstructured Document\",\n        \"system\": \"https://fhir.nhs.uk/England/CodeSystem/England-NRLFormatCode\"\n      },\n        \"extension\": [\n            {\n            \"url\": \"https://fhir.nhs.uk/England/StructureDefinition/Extension-England-ContentStability\",\n            \"valueCodeableConcept\": {\n            \"coding\": [\n                    {\n                    \"system\": \"https://fhir.nhs.uk/England/CodeSystem/England-NRLContentStability\",\n                    \"code\": \"static\",\n                    \"display\": \"Static\"\n                    }\n                ]\n            }\n        }\n        ]\n    }\n  ],\n  \"context\": {\n    \"period\": {\n      \"start\": \"2024-03-06T13:34:00+01:00\",\n      \"end\":\"2026-03-06T13:34:00+01:00\"\n    },\n    \"practiceSetting\": {\n      \"coding\": [\n            {\n                \"system\": \"http://snomed.info/sct\",\n                \"code\": \"788002001\",\n                \"display\": \"Adult mental health service\"\n            }\n      ]\n    },\n    \"related\": [\n        {\n            \"identifier\": {\n                \"system\": \"https://fhir.nhs.uk/Id/nhsSpineASID\",\n                \"value\": \"200000001991\"\n            }\n        }\n    ]\n  },\n  \"resourceType\": \"DocumentReference\"\n}",
               "options": {
                 "raw": {
                   "language": "json"
@@ -184,7 +184,7 @@
             ],
             "body": {
               "mode": "raw",
-              "raw": "{\n  \"status\": \"current\",\n  \"id\":\"Y05868-26b5c8bf-864b-4eb1-928f-4bafb6d9b7b8\",\n  \"type\": {\n    \"coding\": [\n      {\n        \"code\": \"736253002\",\n        \"display\": \"Mental health crisis plan\",\n        \"system\": \"http://snomed.info/sct\"\n      }\n    ]\n  },\n  \"category\": [\n    {\n      \"coding\": [\n        {\n          \"code\": \"734163000\",\n          \"display\": \"Care plan\",\n          \"system\": \"http://snomed.info/sct\"\n        }\n      ]\n    }\n  ],\n  \"subject\": {\n    \"identifier\": {\n      \"value\": \"3495456481\",\n      \"system\": \"https://fhir.nhs.uk/Id/nhs-number\"\n    }\n  },\n  \"date\": \"2024-10-29T13:23:28+00:00\",\n  \"author\": [\n    {\n      \"identifier\": {\n        \"value\": \"Y05868\",\n        \"system\": \"https://fhir.nhs.uk/Id/ods-organization-code\"\n      }\n    }\n  ],\n  \"custodian\": {\n    \"identifier\": {\n      \"value\": \"Y05868\",\n      \"system\": \"https://fhir.nhs.uk/Id/ods-organization-code\"\n    }\n  },\n  \"content\": [\n    {\n      \"attachment\": {\n        \"contentType\": \"application/pdf\",\n        \"language\": \"en-US\",\n        \"url\": \"https://example.org/my-doc.pdf\",\n        \"creation\": \"2024-10-28T15:26:00+01:00\",\n        \"hash\": \"2jmj7l5rSw0yVb/vlWAYkK/YBwk=\",\n        \"title\": \"Physical\",\n        \"size\":\"1000\"\n      },\n      \"format\": {\n        \"code\": \"urn:nhs-ic:unstructured\",\n        \"display\": \"Unstructured Document\",\n        \"system\": \"https://fhir.nhs.uk/STU3/CodeSystem/NRL-FormatCode-1\"\n      }\n    }\n  ],\n  \"context\": {\n    \"period\": {\n      \"start\": \"2024-03-06T13:34:00+01:00\",\n      \"end\":\"2026-03-06T13:34:00+01:00\"\n    },\n    \"practiceSetting\": {\n      \"coding\": [\n        {\n          \"code\": \"708168004\",\n          \"display\": \"Mental health service (qualifier value)\",\n          \"system\": \"http://snomed.info/sct\"\n        }\n      ]\n    },\n    \"related\": [\n        {\n            \"identifier\": {\n                \"system\": \"https://fhir.nhs.uk/Id/nhsSpineASID\",\n                \"value\": \"200000001991\"\n            }\n        }\n    ]\n  },\n  \"resourceType\": \"DocumentReference\"\n}",
+              "raw": "{\n  \"status\": \"current\",\n  \"id\": \"Y05868-2341fb51-fa25-4190-802c-858768029765\",\n  \"type\": {\n    \"coding\": [\n      {\n        \"code\": \"736253002\",\n        \"display\": \"Mental health crisis plan\",\n        \"system\": \"http://snomed.info/sct\"\n      }\n    ]\n  },\n      \"masterIdentifier\": {\n        \"system\": \"urn:ietf:rfc:3986\",\n        \"value\": \"urn:oid:1.3.6.1.4.1.21367.2005.4.1\"\n   },\n    \"relatesTo\": [\n        {\n        \"code\": \"replaces\",\n        \"target\": {\n            \"type\": \"DocumentReference\",\n            \"identifier\": {\n            \"value\": \"Y05868-df3f632a-94a5-4f9b-81dd-b76df52273b3\"\n                }\n            }\n        }\n    ],\n  \"category\": [\n    {\n      \"coding\": [\n        {\n          \"code\": \"734163000\",\n          \"display\": \"Care plan\",\n          \"system\": \"http://snomed.info/sct\"\n        }\n      ]\n    }\n  ],\n  \"subject\": {\n    \"identifier\": {\n      \"value\": \"3495456481\",\n      \"system\": \"https://fhir.nhs.uk/Id/nhs-number\"\n    }\n  },\n  \"date\": \"2025-01-29T13:23:28+00:00\",\n  \"author\": [\n    {\n      \"identifier\": {\n        \"value\": \"RJ11\",\n        \"system\": \"https://fhir.nhs.uk/Id/ods-organization-code\"\n      }\n    }\n  ],\n  \"custodian\": {\n    \"identifier\": {\n      \"value\": \"Y05868\",\n      \"system\": \"https://fhir.nhs.uk/Id/ods-organization-code\"\n    }\n  },\n  \"content\": [\n    {\n      \"attachment\": {\n        \"contentType\": \"application/pdf\",\n        \"language\": \"en-US\",\n        \"url\": \"https://example.org/my-doc-updated.pdf\",\n        \"creation\": \"2025-01-27T15:26:00+01:00\",\n        \"hash\": \"2jmj7l5rSw0yVb/vlWAYkK/YBwk=\",\n        \"title\": \"Physical\",\n        \"size\":\"1000\"\n      },\n      \"format\": {\n        \"code\": \"urn:nhs-ic:unstructured\",\n        \"display\": \"Unstructured Document\",\n        \"system\": \"https://fhir.nhs.uk/England/CodeSystem/England-NRLFormatCode\"\n      },\n        \"extension\": [\n            {\n            \"url\": \"https://fhir.nhs.uk/England/StructureDefinition/Extension-England-ContentStability\",\n            \"valueCodeableConcept\": {\n            \"coding\": [\n                    {\n                    \"system\": \"https://fhir.nhs.uk/England/CodeSystem/England-NRLContentStability\",\n                    \"code\": \"static\",\n                    \"display\": \"Static\"\n                    }\n                ]\n            }\n        }\n        ]\n    }\n  ],\n  \"context\": {\n    \"period\": {\n      \"start\": \"2025-03-06T13:34:00+01:00\",\n      \"end\":\"2026-04-06T13:34:00+01:00\"\n    },\n    \"practiceSetting\": {\n      \"coding\": [\n            {\n                \"system\": \"http://snomed.info/sct\",\n                \"code\": \"788002001\",\n                \"display\": \"Adult mental health service\"\n            }\n      ]\n    },\n    \"related\": [\n        {\n            \"identifier\": {\n                \"system\": \"https://fhir.nhs.uk/Id/nhsSpineASID\",\n                \"value\": \"200000001991\"\n            }\n        }\n    ]\n  },\n  \"resourceType\": \"DocumentReference\"\n}",
               "options": {
                 "raw": {
                   "language": "json"
@@ -192,7 +192,7 @@
               }
             },
             "url": {
-              "raw": "https://sandbox.api.service.nhs.uk/record-locator/producer/FHIR/R4/DocumentReference/Y05868-26b5c8bf-864b-4eb1-928f-4bafb6d9b7b8",
+              "raw": "https://sandbox.api.service.nhs.uk/record-locator/producer/FHIR/R4/DocumentReference/Y05868-2341fb51-fa25-4190-802c-858768029765",
               "protocol": "https",
               "host": ["sandbox", "api", "service", "nhs", "uk"],
               "path": [
@@ -201,7 +201,7 @@
                 "FHIR",
                 "R4",
                 "DocumentReference",
-                "Y05868-26b5c8bf-864b-4eb1-928f-4bafb6d9b7b8"
+                "Y05868-2341fb51-fa25-4190-802c-858768029765"
               ]
             }
           },
@@ -381,7 +381,7 @@
               }
             ],
             "url": {
-              "raw": "https://sandbox.api.service.nhs.uk/record-locator/producer/FHIR/R4/DocumentReference/Y05868-26b5c8bf-864b-4eb1-928f-4bafb6d9b7b8",
+              "raw": "https://sandbox.api.service.nhs.uk/record-locator/producer/FHIR/R4/DocumentReference/Y05868-8552f0d6-c915-4f6a-810d-9d3da3943c94",
               "protocol": "https",
               "host": ["sandbox", "api", "service", "nhs", "uk"],
               "path": [
@@ -390,7 +390,7 @@
                 "FHIR",
                 "R4",
                 "DocumentReference",
-                "Y05868-26b5c8bf-864b-4eb1-928f-4bafb6d9b7b8"
+                "Y05868-8552f0d6-c915-4f6a-810d-9d3da3943c94"
               ]
             }
           },
@@ -438,7 +438,7 @@
               }
             ],
             "url": {
-              "raw": "https://sandbox.api.service.nhs.uk/record-locator/producer/FHIR/R4/DocumentReference/Y05868-bf392627-31d5-464f-bd34-a47072c9768e",
+              "raw": "https://sandbox.api.service.nhs.uk/record-locator/producer/FHIR/R4/DocumentReference/Y05868-aae5cc20-9074-43d4-babc-94eddf890dfe",
               "protocol": "https",
               "host": ["sandbox", "api", "service", "nhs", "uk"],
               "path": [
@@ -447,7 +447,7 @@
                 "FHIR",
                 "R4",
                 "DocumentReference",
-                "Y05868-bf392627-31d5-464f-bd34-a47072c9768e"
+                "Y05868-aae5cc20-9074-43d4-babc-94eddf890dfe"
               ]
             }
           },