EFSO Error code

EFSO results when an ibrdf or ibwrtf call encounters a problem performing a file operation. Specifically, this error indicates that the function is unable to open, create, seek, write, or close the file being accessed.

Solutions

Make sure the filename, path, and drive that you specified are correct.

Make sure that the access mode of the file is correct.

Make sure there is enough room on the disk to hold the file.

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