Solution : https://service.sap.com/sap/support/notes/350913 (SAP Service marketplace login required)
Key words :
partly paid budget billing amount item, additional key words >4022, attached correction instruction, open amount, change caused, system terminates, error message >4022, program error, installation note 326824, note 326824
Related Notes :
435597 | BBP/installment plan: Amount change after partial payment |
326824 | ABP: Changing partly paid amounts from the past |