Hi Neeraj, thak by your help.
Below is step by step that I didi in SAP, the error continue..
First I link the control key in work center
Now I created a pm order and using this work center
Inserted a confirmation
Now I changed a control key in work center
When I enter in order after the last change, I cant create new operations and the old operations had your control key changed
O system changed old operations control key and show the message c2270 when I tried open a new operation