Header-00030-011
XPath to Error /ReturnState/ReturnHeaderState/TaxPeriodBeginDt
Message: Tax Year Begin date - day(DD) must be first day of begin month.
Header-00040-011
Path to XML Error /ReturnState/ReturnHeaderState/TaxPeriodEndDt
Message: Tax Year Ending Date - day (DD) must be last day of the month in which the tax year ends.
Maryland's e-filing system doesn't recognize a tax year beginning other than the 1st day of the month. They realize that may not match the federal return. Also, the ending date must be on the last day of the month.