We have miss communication.
Our client is used the below.
1. SAP Dev(HECD)
We use SAP Dev(HECD) as ABAP DEVELOPMENT and don’t use it for Integration test.
2. SAP QA(HCQ)
We use SAP QA(HCQ) as TEST.
So, SAP QA(HCQ) instance must be connected to ONESOURCE Determination instance for Dev.
-> if there are be changed, please let me know.