Symptom
You are prompted with SAP logon screen whenever you are executing Connection test in transaction code SM59.
Solution
Go to transaction code RZ10, find and change the value of parameter auth/rfc_authority_check to 0 or 1. If you set to 9, the authorization check is active for SRFC-FUGR which caused the connection test to prompt out the logon screen.
auth/rfc_authority_check
Note
Parameter description:
0 = No authorization check
1 = Authorization check active (no check for same user) (no check for same user context and SRFC-FUGR)
2 = Authorization check active (no check for SRFC-FUGR)
9 = Authorization check active (SRFC-FUGR also checked)
