Setup Trusted and Non-Trusted Links between CRM and R3

Trusted Link between CRM and ECC

- Setup in SM59 tcode - In 'Logon & Security' tab, Tick 'Yes' for Trusted relation, and Tick 'Current User' box - This way, RFC calls will be triggered from current user
- In SMT1 tcode, maintain Trusted caller destination.


Non Trusted Link:
- In SM59, 'Logon & Security' tab, give user/pwd details - generally it is 'RFCUSER' and tick 'No' in Trusted relation.