Hi Patricia,
there are two potential reasons for that. First reason is that you cannot change from every system status to any other system status. So for example, you can only lock a condition contract if it was released before.
The other reason...
Hi Pola,unfortunately there are currently no Best Practices for SAP Trade Management available.At the moment, the only available content for SAP Trade Management is part of the SAP Model Company for Trade Management for Consumer Products. You can fin...