The function modules and screens of function group XLFX provide user exits and screen exits for maintaining customer-specific fields at header and item level.

If you use the enhancement, you must create and generate the following screens (even if the screens themselves are not used):

• SAPLXLFX 0200 Subscreen: Additional data, entry, single documents
• SAPLXLFX 0220 Subscreen: Additional data, header, details
• SAPLXLFX 0230 Subscreen: Additional data, item, details
• SAPLXLFX 0320 Subscreen: Additional data, list entry
• SAPLXLFX 0510 Subscreen: Additional data, header, list entry

You must flag all the screens as subscreens. They do not need to contain fields but they must exist to avoid program termination.

The screens are linked with the standard program via function modules. Some function modules provide data for the subscreen (export), and some function modules collect data from the subscreen (import).

• Additional data, header, entry
• EXIT_SAPLWLF2_006 Provision of subscreen data, settlement docs, header
• EXIT_SAPLWLF2_007 Collection of subscreen data, settlement docs, header
• Additional data, header, details
• EXIT_SAPLWLF2_006 Provision of subscreen data, settlement docs, header
• EXIT_SAPLWLF2_007 Collection of subscreen data, settlement docs, header
• Additional data, item, details
• EXIT_SAPLWLF2_008 Provision of subscreen data, settlement docs, item
• EXIT_SAPLWLF2_009 Collection of subscreen data, settlement docs, item
• Additional data, list entry
• EXIT_SAPLWLF2_010 Provision of subscreen data, sett. req. lists, header
• EXIT_SAPLWLF2_011 Collection of subscreen data, sett. req. lists, header
• Additional data, header, list entry
• EXIT_SAPLWLF2_010 Provision of subscreen data, sett. req. list, header
• EXIT_SAPLWLF2_011 Collection of subscreen data, sett. req. list, header

In the PBO function modules, you can configure/supply data to your own data fields.

In the PAI function module, you obtain the current data from the standard system (data that may have changed since PBO was called).

In the import function modules, you can return your fields to the standard program.

All the necessary document information needed to issue data on the
Function/Program:

• EXIT_SAPLWLF2_006: Enhancement: Provide Subscreen Data Payment Docs Header
• EXIT_SAPLWLF2_007: Enhancement: Adopt Subscreen Data Payment Docs Header
• EXIT_SAPLWLF2_008: Enhancement: Provide Subscreen Data Payment Docs Item
• EXIT_SAPLWLF2_009: Enhancement: Adopt Subscreen Data Payment Docs Item
• EXIT_SAPLWLF2_010: Enhancement: Provide Subscreen Data Sett.Req. List Header
• EXIT_SAPLWLF2_011: Enhancement: Adopt Subscreen Data Sett.Req. List Header
• SAPLWLF20206_ENTRY_SAPLXLFX0200: Payment Document: Entry Screen Items User Screen
• SAPLWLF20234_ITEM_SAPLXLFX0230: Payment Document: Item Details Screen Additional Data
• SAPLWLF20244_HEADER_SAPLXLFX0220: Payment Document: Header Details Additional Data User Exit
• SAPLWLF20320_HEADER_SAPLXLFX0320: Settlement Request List: Subscr. Container Header Details Sn
• SAPLWLF20324_HEADER_SAPLXLFX0320: Settlement Request List: Header Details Addit. Data UserExit
• SAPLWLF20514_ENTRY_SAPLXLFX0510: Settlement Request List: Settlem. Req. List Additional Data