For the Communication arrangement SFxyz the user ID is getting picked up as _SFxyz_0. But we need this as _SFxyz Please can you help us resolve this , This is affecting or go live for year end .Please can you check and let us know
Greetings from SAP Cloud Product Support.
Technical User ID which is created as part of communication arrangement cannot be controled and you cannot do the changes to the User ID.
For example if the communication system is xyz and for the first time it technical user Id will be _XYZ for the second time it will be _XYZ_0 and keep on incremented accordingly.
This is expected system behavior.
Further you can refer the 3313992 - Unable to Change User ID of Communication Arrangement.