The xmlrpcd transaction mechanism is used, order is placed with PlaceSubscriptionCancellationOrder_API with
AutoCommit set to
No. The cancellation order is placed and processed independently on
The issue is caused by #PBA-82844 ("Transaction mechanism stops working if we modify CF order order flow").
If you need the transaction mechanism to work, change the order flow transition for CF orders from NW to OP back to Manual.