user exit after park a vendor invoice

Hello,

I need to launch a workflow for approval a vendor invoice when it is parked in the transaction MIR7. I was doing in the method CHANGE_AT_SAVE of an implementation of the BADI INVOICE_UPDATE. However, if the invoice was previously parked and the fiscal year is changed, the document number will change but it is not available on this method yet.

Then, I changed the launch of the workflow to the method CHANGE_BEFORE_UPDATE of the same BADI. Here, the new document number exists, however when I launch the WF it takes status ERROR and I guess it is due to the new invoice is not saved yet in the table RBKP.

Please, do you know any badi or user that is run just after the invoice is saved in the RBKP table as parked?

Thank you in advance.

Best regards.