Gen3 CORS issues calling OIC Endpoint

Summary:

CORS Error for OIC API Call

Content (required):

We recently upgraded to Gen3 and one of the main observation was ,

The Domain URL for OIC and VBCS are different , hence the API calls are considered cross origin. For example in Gen2 if OIC was xxxx/ic/home , VBCS would be xxxx/ic/builder and since domain was same the calls were not cross origin. But now the VBCS and OIC URL's are completely different.

In Order to fix this we have to update each and every integration endpoint to set Allowed Origins Property in the trigger.

Second, even if we do this OIC does not have a way to specify the