Assign Message Type Basic Type and Extension 

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       1.      Choose SAP Menu® Tools ® IDoc Interface/ALE ® Development ® IDoc ® Generate ALE Interface Idoc Type for Message (WE82).  

       2.      Select and then New Entries.

       3.      Enter the basic type, its extension and the message type to which you are assigning this combination. Specify the current release.

The partner profiles check whether the IDoc type and message type “match“ each other. You must therefore make this entry. You also get a specific F4 Help from the mapping: All assigned IDoc types are offered in the corresponding field for each message type and vice versa.

       4.      Save your entries.

In the example, you should maintain the following mapping:

Message type	ORDERS (supplied with the standard system)
Basic type	ORDERS01
Extension	Z1ORDERS
Release	45A