Update openApi.yml

Author: popey2700

openapi.yml

@@ -1194,11 +1194,16 @@ components:
     Sentence:
       type: object
       properties:
-        dataSource:
+        serviceSource:
           type: string
           enum: [NOMIS, NDELIUS]
           example: NOMIS
-          description: Which upstream API the sentence originates from
+          description: Which upstream API service the sentence originates from
+        systemSource:
+          type: string
+          enum: [ PRISON_SYSTEMS, PROBATION_SYSTEMS ]
+          example: PROBATION_SYSTEMS
+          description: Which upstream API system the sentence originates from
         dateOfSentencing:
           type: string
           format: date