Hello Jasmin,
I was working on couple of LIVE views (ex. "_SYS_BIC"."sap.hba.ecc/WorkCenterCapacity"). I converted this into external view and while trying to consume it in CDS view it's showing an generic error ( ‘An error occurred while creating view <ZXXXX> in the database.’).
Few more scenarios I tried:
1. While using DDIC view in CDS, it's working.
2. While converting customized HANA view to external view, I can consume the same external view to CDS without any error.
3. Even encapsulating Live view into HANA view and using that converted ext view to CDS- throwing same generic error.
Not sure what is the special about those external view converted from LIVE view directly or indirectly.
Can you please put some light on it ?