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User Exit for MB21

Former Member
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I need a user exit that will stop a user from creating a reservation before the reservation is posted. Enhancement MBCF0007 seems appropriate and does send out the error message to the user who is entering wrong data but the message is sent AFTER the reservation is already posted. Thanks for your help.


Active Contributor
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Hi Marcia,

there is one user-exit MBCF0010, which is triggered in BAPI_RESERVATION_CREATE1 - I don't try, but maybe it's used in transaction, too (OK, only a small chance).

When you don't stick to user-exits: there is a BADI (SE18) MB_RESERVATION_BADI, where one method DATA_CHECK looks perfect for your purpose.