The filing calander cannot be edited.


  "code": "FilingCalendarCannotBeEdited",
  "target": "Unknown",
  "details": [
      "code": "FilingCalendarCannotBeEdited",
      "number": 904,
      "message": "Unable to Edit this filing calendar",
      "description": "There is a current approved worksheet for this filing calendar.  Filing calendars cannot be edited with an approved worksheet associated with it.",
      "faultCode": "Client",
      "helpLink": "",
      "severity": "Error"


Worksheets are generated monthly and approved between the 5th and the 10th. For monthly returns, the worksheet will be approved monthly. Quartly returns’ worksheets will stay in a pending approval state until the quarter expires.

Once the worksheet approval occurs, the filing calander cannot be edited or adjusted. For more information about filing calendar actions, look at the Api Reference for Filing calendars.