Error: The field 'SignatureDt' with value '0' data is missing

Error message

Validation failed on [FILE_ID]:

Form: ReturnHeaderState
Requirement: Base type for a date
Error: The field 'SignatureDt' with value '0', data is missing.

Element Name: SignatureDt
XPath: /ReturnState[1]/ReturnHeaderState[1]/BusinessRepresentative[1]/SignatureDt[1]
XML Fragment: 0
Field Key: 123,532,3,0,0,0,0,0,0
Error Code: [CODE]
Error Reason: Error parsing '0' as date datatype.
The element '{http://www.irs.gov/efile}SignatureDt' with value '0' failed to parse.

Business Representative Information: Maryland requires that the Business Representative's first and last name, title, and date of signature be provided

Solution

Go to
Organizer
States
Common State
General Information
Basic Return Information
Signature Information
and enter the signature date in Column L.
Perform a full recompute.
Recreate the e-file.