User exit after posting sales invoice

Hello experts,

In the client i'm working they have developped this exit: EXIT_SAPLV60B_001. This exit is used whenever they save an invoice in order to create a new purchase invoice related to this sales invoice. But they have realized that in that moment the sales invoice is not yet posted and they need it before calling to purchase invoice creation. If there is any error when posting sales invoice, purchase invoice shouldn't be created.

Is there any other exit called after posting invoice ?? I didn't find anything. Maybe this is not possible ??

Thanks in advance,

María