# 175 Cannot Unlock Data File or Record Error After Cancelling an Append

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I got error #10242 can not unlock data file or record in a datafile. This happen when I try to add new record to a grid and then decide to move back without entering anything Error will occur when using Delphi 4 but not in DBSYS.EXE. The data file has one primary key but no secondary, also blob fields but
no data in it.