I would appreciate very much if someone could confirm whether payment voucher in SAP could accomodate more than 999 lines.
Generally the line items in SAP is limited to 999 items only per document. You can take the help of SAP guys for a workaround of the same or may be you can ask your Abaper to help you out for payment involving more than 999 items SAP has alos provided SAP note for the same. May be you can go for FI summarization by using tcode OBCY (table summarization)
refer this link below