diff --git a/Makefile b/Makefile
index dacd22f5e..d137fbdc5 100644
--- a/Makefile
+++ b/Makefile
@@ -45,11 +45,6 @@ publish-oas:
 	$(MAKE) copy-examples
 	npm run publish-oas
 
-set-authorization: guard-APIM_ENV
-	@ AUTHORIZATION=authorization-$$APIM_ENV.yml \
-	envsubst '$${AUTHORIZATION}' \
-	< specification/api/components/parameters/authorization/authorization-template.yml > specification/api/components/parameters/authorization/authorization.yml
-
 set-target: guard-APIM_ENV
 	@ TARGET=target-$$APIM_ENV.yml \
 	envsubst '$${TARGET}' \
@@ -69,7 +64,6 @@ set-security: guard-APIM_ENV
 	< specification/api/components/security-schemes/security-schemes-template.yml > specification/api/components/security-schemes/security-schemes.yml
 
 construct-spec: guard-APIM_ENV
-	$(MAKE) set-authorization APIM_ENV=$$APIM_ENV
 	$(MAKE) set-target APIM_ENV=$$APIM_ENV
 	$(MAKE) set-access APIM_ENV=$$APIM_ENV
 	$(MAKE) set-security APIM_ENV=$$APIM_ENV
diff --git a/VERSION b/VERSION
index ed1dc8919..0e6bc07b3 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.0.1-${yyyy}${mm}${dd}.${HH}${MM}${SS}+${hash}
+1.0.0-${yyyy}${mm}${dd}.${HH}${MM}${SS}+${hash}
diff --git a/sdk/Makefile b/sdk/Makefile
index ba052471e..760924815 100644
--- a/sdk/Makefile
+++ b/sdk/Makefile
@@ -3,7 +3,7 @@ VERSION ?= ""
 SHELL = /bin/bash
 
 build: version # Build the project artefact @Pipeline
-	VER=$$(cat .version) && cd .. && make build-yml-oas-spec APIM_ENV=prod && npm run generate --buildver=$$VER && cd sdk
+	VER=$$(cat .version) && cd .. && npm run build --buildver=$$VER && cd sdk
 	./swagger-static.sh
 
 clean: # Clean-up project resources (main) @Operations
diff --git a/sdk/_config.version.yml b/sdk/_config.version.yml
index 3941841c6..9e5d8273f 100644
--- a/sdk/_config.version.yml
+++ b/sdk/_config.version.yml
@@ -1 +1 @@
-version: 1.0.1-20251125.131623+3d60875
+version: 0.2.0-20251120.121539+0c18993
diff --git a/specification/api/components/parameters/authorization/authorization-int.yml b/specification/api/components/parameters/authorization/authorization-int.yml
deleted file mode 100644
index c4e9225de..000000000
--- a/specification/api/components/parameters/authorization/authorization-int.yml
+++ /dev/null
@@ -1,9 +0,0 @@
-name: Authorization
-in: header
-description: |-
-  An OAuth 2.0 bearer token. Required in integration and production environments.
-required: true
-schema:
-  type: string
-  pattern: ^Bearer [[:ascii:]]+$
-  example: Bearer g1112R_ccQ1Ebbb4gtHBP1aaaNM
diff --git a/specification/api/components/parameters/authorization/authorization-internal-dev-pr.yml b/specification/api/components/parameters/authorization/authorization-internal-dev-pr.yml
deleted file mode 100644
index e62b20673..000000000
--- a/specification/api/components/parameters/authorization/authorization-internal-dev-pr.yml
+++ /dev/null
@@ -1,7 +0,0 @@
-name: apikey
-in: header
-description: |-
-  API Key to authorize in dynamic environments only.
-required: false
-schema:
-  type: string
diff --git a/specification/api/components/parameters/authorization/authorization-internal-dev.yml b/specification/api/components/parameters/authorization/authorization-internal-dev.yml
deleted file mode 100644
index de566bd12..000000000
--- a/specification/api/components/parameters/authorization/authorization-internal-dev.yml
+++ /dev/null
@@ -1,9 +0,0 @@
-name: Authorization
-in: header
-description: |-
-  An OAuth 2.0 bearer token. Required in integration and production environments.
-required: false
-schema:
-  type: string
-  pattern: ^Bearer [[:ascii:]]+$
-  example: Bearer g1112R_ccQ1Ebbb4gtHBP1aaaNM
diff --git a/specification/api/components/parameters/authorization/authorization-prod.yml b/specification/api/components/parameters/authorization/authorization-prod.yml
deleted file mode 100644
index c4e9225de..000000000
--- a/specification/api/components/parameters/authorization/authorization-prod.yml
+++ /dev/null
@@ -1,9 +0,0 @@
-name: Authorization
-in: header
-description: |-
-  An OAuth 2.0 bearer token. Required in integration and production environments.
-required: true
-schema:
-  type: string
-  pattern: ^Bearer [[:ascii:]]+$
-  example: Bearer g1112R_ccQ1Ebbb4gtHBP1aaaNM
diff --git a/specification/api/components/parameters/authorization/authorization-ref.yml b/specification/api/components/parameters/authorization/authorization-ref.yml
deleted file mode 100644
index c4e9225de..000000000
--- a/specification/api/components/parameters/authorization/authorization-ref.yml
+++ /dev/null
@@ -1,9 +0,0 @@
-name: Authorization
-in: header
-description: |-
-  An OAuth 2.0 bearer token. Required in integration and production environments.
-required: true
-schema:
-  type: string
-  pattern: ^Bearer [[:ascii:]]+$
-  example: Bearer g1112R_ccQ1Ebbb4gtHBP1aaaNM
diff --git a/specification/api/components/parameters/authorization/authorization-sandbox.yml b/specification/api/components/parameters/authorization/authorization-sandbox.yml
deleted file mode 100644
index de566bd12..000000000
--- a/specification/api/components/parameters/authorization/authorization-sandbox.yml
+++ /dev/null
@@ -1,9 +0,0 @@
-name: Authorization
-in: header
-description: |-
-  An OAuth 2.0 bearer token. Required in integration and production environments.
-required: false
-schema:
-  type: string
-  pattern: ^Bearer [[:ascii:]]+$
-  example: Bearer g1112R_ccQ1Ebbb4gtHBP1aaaNM
diff --git a/specification/api/components/parameters/authorization/authorization-template.yml b/specification/api/components/parameters/authorization/authorization-template.yml
deleted file mode 100644
index dcb94c5fe..000000000
--- a/specification/api/components/parameters/authorization/authorization-template.yml
+++ /dev/null
@@ -1 +0,0 @@
-$ref: $AUTHORIZATION
diff --git a/specification/api/components/parameters/authorization/authorization.yml b/specification/api/components/parameters/authorization/authorization.yml
deleted file mode 100644
index 1dd82fdc6..000000000
--- a/specification/api/components/parameters/authorization/authorization.yml
+++ /dev/null
@@ -1 +0,0 @@
-$ref: authorization-prod.yml
diff --git a/specification/api/components/security-schemes/security-schemes.yml b/specification/api/components/security-schemes/security-schemes.yml
index 78a3ea0e7..33c6527db 100644
--- a/specification/api/components/security-schemes/security-schemes.yml
+++ b/specification/api/components/security-schemes/security-schemes.yml
@@ -1 +1 @@
-$ref: security-schemes-prod.yml
+$ref: security-schemes-internal-dev-pr.yml
diff --git a/specification/api/components/security/security.yml b/specification/api/components/security/security.yml
index 393524ce3..53a356678 100644
--- a/specification/api/components/security/security.yml
+++ b/specification/api/components/security/security.yml
@@ -1 +1 @@
-$ref: security-prod.yml
+$ref: security-internal-dev-pr.yml
diff --git a/specification/api/components/x-nhsd-apim/access.yml b/specification/api/components/x-nhsd-apim/access.yml
index c69c222d1..b0ce60643 100644
--- a/specification/api/components/x-nhsd-apim/access.yml
+++ b/specification/api/components/x-nhsd-apim/access.yml
@@ -1 +1 @@
-$ref: access-prod.yml
+$ref: access-internal-dev-pr.yml
diff --git a/specification/api/components/x-nhsd-apim/target.yml b/specification/api/components/x-nhsd-apim/target.yml
index a0f578ca7..37ed07210 100644
--- a/specification/api/components/x-nhsd-apim/target.yml
+++ b/specification/api/components/x-nhsd-apim/target.yml
@@ -1 +1 @@
-$ref: target-prod.yml
+$ref: target-internal-dev-pr.yml
diff --git a/specification/api/notify-supplier-phase1.yml b/specification/api/notify-supplier-phase1.yml
index 9588b8201..589c18afa 100644
--- a/specification/api/notify-supplier-phase1.yml
+++ b/specification/api/notify-supplier-phase1.yml
@@ -9,7 +9,6 @@ security:
 paths:
   /letters:
     parameters:
-      - $ref: 'components/parameters/authorization/authorization.yml'
       - $ref: 'components/parameters/requestId.yml'
       - $ref: 'components/parameters/correlationId.yml'
     post:
@@ -18,7 +17,6 @@ paths:
       $ref: 'components/endpoints/listLetters.yml'
   '/letters/{id}':
     parameters:
-      - $ref: 'components/parameters/authorization/authorization.yml'
       - $ref: 'components/parameters/requestId.yml'
       - $ref: 'components/parameters/correlationId.yml'
       - $ref: 'components/parameters/resourceId.yml'
@@ -28,7 +26,6 @@ paths:
       $ref: 'components/endpoints/patchLetter.yml'
   '/letters/{id}/data':
     parameters:
-      - $ref: 'components/parameters/authorization/authorization.yml'
       - $ref: 'components/parameters/resourceId.yml'
       - $ref: 'components/parameters/requestId.yml'
       - $ref: 'components/parameters/correlationId.yml'
@@ -38,7 +35,6 @@ paths:
     #  $ref: 'components/endpoints/headDataId.yml'
   /mi:
     parameters:
-      - $ref: 'components/parameters/authorization/authorization.yml'
       - $ref: 'components/parameters/requestId.yml'
       - $ref: 'components/parameters/correlationId.yml'
     post: