Cobol Write Statement Status Error 22 -- COBOL400-L

I have racking my brain yesterday on how to use the WRITE statement with getting the Status 22 Write Error. What I am trying to do is to read a record. Do a small calculation on it and then use the results of that calculation to write a brand new record in the same file. When I run the program it gives me the Status 22 error that I am trying to write a duplicate record. If anyone can help, that would be great. Thanks! Diane

Here is part of my code:
This is what I have in the Input-Output Section:
SELECT STUDENT-HISTORY-FILE
             ASSIGN TO DATABASE-STCHSL0
             ORGANIZATION  INDEXED
             ACCESS IS DYNAMIC
             RECORD KEY IS EXTERNALLY-DESCRIBED-KEY
             FILE STATUS IS DBSTATUS.

Data Section:
OPEN I-O STUDENT-HISTORY-FILE.
          IF DBSTATUS NOT = ZERO,
             DISPLAY 'UNABLE TO ACCESS STCHSLT-FILE; '
                  'STATUS IS ' DBSTATUS
                  PERFORM 999-STOP-RUN.

Starting the file:
MOVE 0 TO R9NMID
          MOVE 'COMP' TO R9CQAA.
          MOVE 'XX' TO R9CMAA.
          MOVE 2 TO R9KHAA.
          MOVE 'MPRQ' TO R9B1AA.
          MOVE '171' TO R9B2AA.
          START STUDENT-HISTORY-FILE KEY NOT LESS THAN
                     EXTERNALLY-DESCRIBED-KEY
                     INVALID KEY
                        CONTINUE.
          IF DBSTATUS NOT = ZERO,
             DISPLAY 'UNABLE TO ACCESS STCHSLT-FILE; '
                  'STATUS IS ' DBSTATUS
                  PERFORM 999-STOP-RUN.

Procedure Division:
622-CREATE-031-RECORD.
          MOVE R9NMID TO WS-ID.
          PERFORM 630-CREATE-RECORD.
          DISPLAY R9CQAA ' ' R9CMAA ' ' R9KHAA ' ' R9B1AA
                  ' ' R9B2AA.
             WRITE STUDENT-HISTORY-REC
                INVALID KEY
                    DISPLAY 'DBSTATUS IS ' DBSTATUS.
                  CONTINUE.
             EVALUATE DBSTATUS
                 WHEN "22"
               DISPLAY "DUPLICATE PRI KEY: ", STUDENT-HISTORY-REC
          ADD 1 TO WS-COUNT-3.

630-CREATE-RECORD. MOVE SPACES TO STUDENT-HISTORY-REC. MOVE WS-ID TO R9NMID. MOVE 'COMP' TO R9CQAA. MOVE spaces TO R9KUAA. MOVE 'XX' TO R9CMAA. MOVE spaces TO R9KVAA. MOVE 3 TO R9KHAA. MOVE 'MPRQ' TO R9B1AA. MOVE RPT-COURSE-NUMBER TO R9B2AA. MOVE SPACES TO R9BWAA. MOVE 'E' TO R9B3AA. MOVE SPACES TO R9K2AA. MOVE SPACES TO R9KIAA. MOVE SPACES TO R9KJAA. MOVE SPACES TO R9KKAA. MOVE SPACES TO R9CIAA. MOVE SPACES TO R9CAAA. MOVE SPACES TO R9CEAA. MOVE ZERO TO R9J2AA. MOVE SPACES TO R9I8AA. MOVE SPACES TO R9I9AA. MOVE SPACES to R9MLAA. MOVE SPACES TO R9K5AA. MOVE SPACES TO R9MWAG. MOVE SPACES TO R9PTAA. MOVE 'DIANE' TO R9LRAZ. MOVE ZERO TO R9KLAA. MOVE ZEROES TO R9ZZAD. MOVE ZERO TO R9KWAA. MOVE ZERO TO R9LXAA. MOVE ZEROES TO R9KQAA. MOVE ZEROES TO R9KRAA. MOVE ZEROES TO R9KXAA. MOVE ZEROES TO R9KYAA. MOVE ZERO TO R9KSAA. MOVE ZERO TO R9KTAA. MOVE ZERO TO R9NTAA. MOVE ZERO TO R9JIAB. MOVE ZERO TO R9LIAG. MOVE ZERO TO R9LKAG. MOVE ZERO TO R9LLAG. MOVE ZERO TO R9LJAG. MOVE ZERO TO R9XPAK. MOVE ZERO TO R9XMAK. MOVE ZERO TO R9V5AP. MOVE ZERO TO R9V6AP. MOVE ZERO TO R9V7AP. MOVE ZERO TO R9V8AP. MOVE ZERO TO R9JYAU. MOVE ZERO TO R9NNAZ. MOVE ZERO TO R9NOAZ. MOVE ZERO TO R9NPAZ. MOVE ZERO TO R9NQAZ. MOVE ZERO TO R9N0AZ. MOVE ZERO TO R9N1AZ. MOVE ZERO TO R9QQAK. MOVE ZERO TO R9QMAK. MOVE ZERO TO R9QNAK. MOVE ZERO TO R9QOAK. MOVE ZERO TO R9QPAK. MOVE ZERO TO R9Q3AD. MOVE ZERO TO R9Q7AD. MOVE 'INM009 ' TO R9USR. MOVE 'COMPASS3 ' TO R9JOB. ACCEPT RUN-DATE FROM DATE. MOVE RUN-DATE TO DATE-CCYYMMDD. IF DATE-YY-1 > 90 MOVE 00 TO DATE-CC ELSE MOVE 01 TO DATE-CC. MOVE DATE-CCYYMMDD TO R9JDT. ACCEPT RUN-TIME FROM TIME. COMPUTE TIME-HHMMSS = RUN-TIME / 100. MOVE TIME-HHMMSS TO FORMATTED-TIME. INSPECT FORMATTED-TIME REPLACING ALL '/' BY ':'. MOVE FORMATTED-TIME TO R9JTM.