Symptom
You want to post an API using Postman. However, after you send the request, the error message "Empty key predicate not allowed" shows up.
Environment
SAP S/4HANA Cloud
Cause
There is an extra space (" ") at the end of the request URL.
Resolution
Delete the extra space.
Keywords
Postman, API, 400 Bad Request, empty key predicate, extra space , KBA , OPU-API-RT , Runtime , Problem
Product
SAP S/4HANA Cloud Public Edition all versions ; SAP S/4HANA Cloud all versions