Purchase Requisitions can be created manually or via interface.
PR document types include:
SPS
Outbound MIPR
Miscellaneous Pay
AXOL PR
These are all created manually in GFEBS. Each PR type, whether created manually or via interface, has a specific document type assigned and each document type flags certain files as mandatory. All PRs are subject to workflow approval except for Miscellaneous Pay PRs which have a separate approval requirement.