I'm configuring DMEE structure for payment medium file. One of the requirements for this payment medium is the field with line item number of the payment order. This should be the field with incremental value starting from 1 till n, where n equals the number of payment orders in the file.
I've reviewed the data retrieved by the following structures FPAYH, FPAYP as well as FPAYHX using debugger but could not find anything useful for this purpose. Could you suggest, how to solve this issue? Is there any standard field that I've overllooked or should I create some function module?
Thank you in advance!