I have an already developed SSIS 2005 package which can import maximum of 50 columns of *.xlsx file. The file format is same except with the column numbers. I have many components in SSIS package (e.g. unpivot data, derrived column etc) which are developed
for 50 columns. The package works fine for importing 50 columns. But sometimes it fails for excel sheet having 12 columns (columns < 50) it gives error for the source columns cannot be found. Surprisingly, if the contents are copied to another file it may
work but not surely. Please let me know if I can do anything in existing package.
Thanks in advance,
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