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PO Dispatch:- ORA-00001: Unique Constraint (SYSADM.PS_POHDRCOM_TAO4) Violated Error Encountered When Dispatching PO (Doc ID 2805099.1)

Last updated on SEPTEMBER 28, 2021

Applies to:

PeopleSoft Enterprise SCM Purchasing - Version 9.2 to 9.2 [Release 9]
Information in this document applies to any platform.


PO dispatch process goes to No Success when a PO created by copying two requisition with header comments is dispatched.


  1. Navigation: Purchasing -> Requisitions -> Add/Update Requisitions, Create a requisition with two header comments then approve, budget check.
  2. Copy the newly created requisition to another requisition then delete the first header comment
  3. Navigation: Purchasing -> Purchase Orders -> Add/Update POs, Source the first requisition to a PO then save.
  4. Source again the second requisition to same PO then save.
  5. Check the send to supplier in the header comments and save.
  6. Budget check and dispatch the PO.


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