I need to change the Accounting Document type from DI to RD
when the posting document type is ZFI OR ZFIC and when the distribution channel is 50.
Accounting Document Type: BKPF-BLART.
Posting Document Type : VBRK-FKART.
For the Transaction vf01/vf02..
when we post a document it checks these conditions and it should change the document type.
Is there any exit for this.....