The Designer returns an error if you analyze a shift-sensitive flat file that contains shift-in and shift-out characters, but does not meet the following requirements:
A shift-out and a shift-in character must enclose all multibyte characters. Single-byte characters do not need to be enclosed with shift characters.
The first shift character in a row must be a shift-out character.
A file cannot contain nested shift characters. For example, you cannot have the following sequence:
A shift-in character must close a shift-out character in the same row.
The Flat File Wizard disables the fixed-width option if the file has a multibyte character that contains more than two bytes per character. Each row in a file must not exceed 16 KB.
The Flat File Wizard validates up to 500 rows or 256 KB of data, whichever comes first. If the file does not meet the above requirements, the Integration Service writes errors to the session log.