Hi,

These are the specs:

SERP version is 8.5 2024-04-17 (build 85554577)
2 concurrent users, No Nomminal users in contract
3 concurrent users created in DB, 1 for using throught REST API

Scenario:
Only User1 connect, RESTAPI request some data, everything ok
User1 and User2 connect, RESTAPI request some data, Unothorized access status error received.
User2 logout, RESTAPI request some data, everything ok

I´m using POSTMAN to do test.
Ive made test with and without Optional Features >> Disable sessions for web api, checked.
Both using basic authentication and OAuth

Seems that once User limit is reached on logged users using client SERP, no more RESTAPI request can b made.