During metadata configuration for outbound process, the list in the 'Field that represent the generated key in PeopleSoft' property should only display the primary key fields.
PeopleSoft Adapter EMD displaces all the fields in the component.
Resolving the problem
This issue has been resolved in PeopleSoft Adapter Fix Pack version 220.127.116.11. With this version, only the primary key attributes are listed in EMD for the 'Field that represent the generated key in PeopleSoft' property.