The previous Symphony file and Symnew file have the same run number - AWSBHV082E

If SwitchPlan stdlist shows the following messages: 
STAGEMAN: AWSBHV082E: The previous Symphony file and Symnew file have
the same run number. They cannot be merged to form the new symphony file.
Cause and solution: There are several possible causes because the Symphony and Symnew run numbers have the same values, common causes for this are:
  1. MakePlan did not extend the run number in the Symnew file.
  2. SwitchPlan ran before MakePlan.
  3. The Stageman process ran twice on the same Symnew file without resetting the plan or deleting the Symphony file.

AWSJCL054E: The command "CONFIRM" has failed. 
AWSJPL016E: An internal error has occurred. A global option "confirm
run member" cannot be set.
Cause and solution: These error messages are present when the last step of the SwitchPlan, that is planman confirm fails. Analyze the messages.log for more information and rerun planman confirm.