This field name is not known
Symptoms
           Running a report produces the error: 
           
         This field name is not known.
Possible solutions
           Having a report field that was not successfully mapped to a stored procedure field, can sometimes cause this. In these cases, the unmapped stored procedure field will be part of the error message; for example: 
           
          This field name is not known : {Rpt_Ap01FRISp;1.TcAmtAmtPaid} 
          Make sure the report field is in the stored procedure’s result set, and set the data source location as described in the Error 534 topic.