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Uploading a spreadsheet (.xlsx) instead of a .tab or .txt file: You can get the error message “The first column is required to be the key� when you upload classification files in an incorrect format. The classification importer does not know how to handle .xls or .xlsx files. When in the ‘Save As’ dialogue in Excel, set the correct Save as type:

• On Windows, use the file format Text (Tab delimited) (*.txt)
• On Mac, use the file format Windows Formatted Text.

Changing the filename extension after saving it as a workbook: Attempting to directly rename a file extension generates an invalid workbook. Only use Excel’s Save As function or edit classifications in a text editor such as Notepad++.

Using uppercase extensions: Uppercase extensions (such as fileupload.TXT) don’t work. Rename the file to a lowercase extension (fileupload.txt).

Mismatched character encoding: Be sure that the encoding of the saved classification upload matches the original encoding when the template was downloaded. If you upload a UTF-16 file when it was originally encoded in UTF-8, uploads produce unexpected results. ÃÛ¶¹ÊÓƵ recommends uploading files using UTF-8 without byte order marks.

Rows that are already classified: When attempting to upload rows that are already classified with the same value, the importer returns rows that had no effect. This outcome is expected, as classifications don’t reclassify a key value with the same classification. It is a notification instead of an error. It is not anything to worry about if you do not alter all rows within an export file. ÃÛ¶¹ÊÓƵ recommends only uploading changed rows.

Header does not match the variable being uploaded: If you download a classification template for the Tracking code dimension and attempt to upload it to an eVar classification, it fails. Only use export files for the specific variables they were exported from.

A key or classification value contains the value 0: Classifications cannot differentiate the value 0 from a blank cell, so it cannot classify this value. See Classifications FAQ.

The classification file contains commas or special characters: See Classifications FAQ.

Extra tabs in the uploaded file: Sometimes when editing classification files, an extra tab can be accidentally slipped in. Each row requires an identical number of tabs to process correctly. To check for extra tabs within the file, highlight all text in a plaintext editor and make sure that no rows have extra space at the end.

Duplicate key values exist in the file: Each key value can only have one classification per column. If you attempt to classify the same value multiple times, the importer throws an error.

Subclassifications exist and are incorrectly configured: If subclassifications exist, check the following:

• All subclassification values have a parent classification value
• No two subclassifications reference the same parent classification value

Column mismatch: You can get the error message “The key on line has too many columns� if there are an invalid number of columns on any given row. For example, you have 3 columns in your classification upload and the variable only has a single classification. Validate your upload file to make sure that the number of columns are not greater than the number of classifications configured for that variable.