What can cause the error "Changable settlement data is in the closed period"?

Question

1C

The closing date is 09/30/2019, and the date of the posted document is 02/10/2019.
When conducting, an error occurs "The changeable data of mutual settlements are in the closed period." What might cause it?

Answer 1

It is possible that the document is trying to change data from a closed period.

Answer 2

Update to the latest release configuration)