Symptom
You are getting below error when trying to setup RSA1 source system connection.
Solution
1. Login to the source system (in our case SAP ERP system), execute transaction code SE37 and enter RSAP_BIW_DISCONNECT as the Function Module. Now, press F8.
2. Enter the value as per below screenshot. You may refer to table RSBASIDOC. Press F8 again.
3. Wait till the execution is completed. Now, you can RSA1: Create Source System Connection to SAP System again.
