I want to know that in which particular case we should create RFC between systems.I am aware of like how we create trusted RFC and what benefits we get by it but dnt know as per standred in which scnerio we should create it.
But I didn't understand role of trusted RFC in secure connection as if in simple RFC we use communication user in that case also connection will be secured.
trusted RFCs are usually used when data must be accessed in another system with the same user (for checking the authority).
For example:
System A: HR system with the personal data
System B: Document Management System with the document info sets, etc.
Now if a HR user looks in the HR system for a specific personal number and wants to see the documents for this person. The HR data itself is located in system A, but the documents are located on system B in the document info sets. Now you must have a remote connection that allows you to access the documents in system B with the same user as you have logged on the HR. Now you can check authority in system B too, because you have logged in with the same user.
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