X_PAY_HEADER_SOURCE is a [fixed lexicon] with the following values:\\

%%zebra-table
||Saved\\Value||Displayed Value
| 01 | [IPPH] Screen
| 02 | [IPTR] Screen
| 03 | [IPTL] Loader
| 04 | [UPTG] Generator
| 05 | External Source
| 06 | [UPCPAY] Generator
| 07 | [UPRETRO] Pay
| 08 | [UPCVAC] Vacation Pay
| 09 | [UPVEND] Proc Vendors
| 10 | [UPTL] Loader
| 11 | Final Pay
| 12 | [UPCTSP] Generator
| 13 | [UPDISBV]
%%