Error message 450

Cause

The error message Purchase order '%1' has not been changed since the last created purchase order. No new purchase order is being created. can appear when a purchase order cannot be resent without first changing it.

Solution

1. In the MKG client, open the Purchase Orders module and navigate to the relevant purchase order.
2. Make a change to the purchase order so that the order can be sent again. For example, add the field Internal Memo to the overview of the purchase order lines and enter something there.
3. Save the purchase order and execute the Order action again.