After approving the PO, the action in the PO action history is “Reserve” but this message appears in the workflow process approval for that PO.
“PO Approval Error: Line # 1 Schedule # 1 Distribution # 1 The Accounting date is not in an open encumbrance period”
Error Cause:
The PO distributions have a GL Date of a Closed period. Therefore, the error message “The Accounting date is not in an open encumbrance period” is correct.
Solution:
In order to approve the PO, do one of the following:
a) Re-open the SEP-15 period, or
b) Change the GL Date on the distributions to a new date that is within an ‘Open’ period.
The PO cannot be approved/reserved if the dates on the distribution do not fall within an open period.
As reference from Doc ID 2076668.1