TF291020: A validation error occurred while uploading Project Server mapping data. The '{1}' subelement of the '{2}' element ...

TF291020: A validation error occurred while uploading Project Server mapping data. The '{1}' subelement of the '{2}' element that maps to the Project Server field '{3}' requires that the '{0}' attribute is set to '{4}', and not set to '{5}'. Correct the field mapping for Team Foundation Server and Project Server integration.