divide electronic invoice

Hello good day experts
It's about SAP Business ByDesign and have a question because I want to automate the process of "Split open positions" of dividing an electronic bill in monthly installments.
an invoice in accounts receivable is needed and split the bill in monthly installments.
This process already exists and is standard on sap is called "split open positions" but you want to automate customer order.
the data found in the business object: Travel Receivable Payables Register.
but the data is read-onlyand there will action to make the split, someone has encountered the sameproblem or have a proposed solution?
(Annex pictures)

Thanks in advance
Best regards