Order status save issue

Hi All, 

i am getting this error  while saving the "Order Status " in the shopware backend.

why i am getting these errors.

Please help me out 

Alert Message:

“The order has been changed by another user in the meantime. To prevent overwriting these changes, saving the order was aborted. To show these changes, please close the order and re-open it. Do you want to overwrite the latest changes?” 

Error Message:

“An error has occurred while attempting to save order 20029.
The order has been changed in the meantime. To prevent overwriting these changes, saving the order was aborted. Please close the order and re-open it.”

 

Thanks in advance