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 DBFNTX/1022  Lock required

     Explanation:  An attempt was made to update a record in a shared
     database without first obtaining a lock.

     Action:  Correct the program.  Obtain a record lock or file lock for
     the work area before attempting to update a record.  If shared access is
     not desired, use the EXCLUSIVE clause of the USE command to gain
     exclusive access to the database (.dbf) file.

     See Also:  USE command, RLOCK() function, FLOCK() function, "Network
     Programming" chapter in the Programming and Utilities Guide

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