process chain error

Hi All,

I have a very peculiar problem. There is a process chain which is scheduled to run at 12:00 Pm cet time daily. The process chain includes several local process chains also. But there is one local process chain which gets started at 11:30 am cet. I checked in maintain variant. There is no scheduling done to start it at 11:30. But I don't understand how is it starting at 11:30. any pointer would be of great help. Please provide me quick responses.

Thanks in advance,

Sananda