One of the prerequisites that a Fiori UI could be extensible is that it should have a corresponding business context registered in tcode SCFD_REGISTRY:

For research purpose, we can get a list of all available business context and save it locally via a Batch request in postman:

Content type: multipart/mixed;boundary=batch_19f5-6916-f298

x-csrf-token: you should generate it dynamically

request body:

–batch_19f5-6916-f298

Content-Type: application/http

Content-Transfer-Encoding: binary

GET BusinessContextSet?KaTeX parse error: Expected 'EOF', got '&' at position 7: skip=0&̲top=500&KaTeX parse error: Expected 'EOF', got '&' at position 21: …ecount=allpages&̲orderby=BusinessContextDescription%20asc HTTP/1.1

Accept-Language: en

Accept: application/json

MaxDataServiceVersion: 2.0

DataServiceVersion: 2.0

–batch_19f5-6916-f298–

an example of response got from QJ3/500:

the business context for MARA: