I'm creating a Web Service from SE37. After given the name of the Virtual Interface (ZUser), the name of the Web Service Definition (ZUser) and the package ($tmp) the system ask me to enter a REGISTER OBJECT for Object R3TR CLAS /1BCDWB/WSC0........
Wich object is it?
Do I need to register once?
Thank you for your help
What have you called your Function Module? Its should be in the customer namespace, beginning with 'Z'.
This looks like the message you receive when you are changing a SAP Standard Object. SAP enforces change control on any SAP standard objects by forcing you to obtain an Object Key from them and enter it whenever you change a SAP standard object.
It looks like you are aware of the above, but I would double check that everything you are developing is in the customer namespace (Z) and that your Object Class is also in the customer namespace ($tmp should be Ok which is a bit confusing).
Hope this helps - please consider awarding points if it did.