The following diagnostic is generating: FORM 4720, SCHEDULE A, CORRECTIVE ACTION STATEMENT: THE FOLLOWING INPUT CODES ARE REQUIRED FOR EACH ITEM: "SCHEDULE AND PART"; "LINE NUMBER"; AND "DESCRIBE THE ACT OR TRANSACTION." IF CORRECTIVE ACTION HAS BEEN MADE THEN "DESCRIBE THE CORRECTIVE ACTION" AND "DATE OF CORRECTION" ARE REQUIRED. IF CORRECTIVE ACTION HAS NOT BEEN MADE THEN "EXPLANATION WHY CORRECTIVE ACTION HAS NOT BEEN MADE" AND "EXPLANATION OF STEPS BEING TAKEN TO MAKE THE CORRECTION" ARE REQUIRED. THE "ACT NUMBER" IN COL (A) OF SCHEDULE A SHOULD MATCH THE "LINE NUMBER" FIELD IN THE CORRECTION STATEMENT.