Overview

Error 99010 is one of the more common listing errors Amazon sellers encounter when uploading product data through flat files or inventory templates. This error triggers when conditionally required fields are left incomplete — meaning certain data fields become mandatory once a related field is filled in. Understanding how these field dependencies work can save sellers significant time and frustration during the listing process.

Key Points / What Sellers Need to Know

• Conditionally required fields travel in groups — When you populate one field in a related group, all other fields in that group must also be filled in with valid values, or the upload will fail.
• Sale pricing is a common trigger — If you enter a sale price for a promotion, you must also provide both a sale start date and a sale end date. Missing either date will generate this error.
• Date formatting matters — Even if all required fields are present, using an incorrect date format (anything other than YYYY-MM-DD or DD-MM-YYYY) will still trigger the error.
• Product identifiers must be paired — If you provide an external product ID, you must also specify the ID type (such as UPC, EAN, or GTIN). One without the other will cause a rejection.
• Errors can appear in bulk — A single flat file upload can generate hundreds of 99010 errors if multiple listings share the same missing field pattern.

How the Error Works

Error 99010 appears in your processing report after a flat file upload fails validation. The error message follows a specific pattern: it identifies the group of related fields and shows which values are present and which are null. For example, if you set a sale price but leave the start and end dates empty, the report will display the sale price value alongside null entries for the date fields. This makes it relatively straightforward to identify exactly which pieces of data are missing, though the formatting of the error message itself can appear confusing at first glance due to the way Amazon structures its field group references.

The error can also cascade across many listings simultaneously. If you are updating hundreds of products with promotional pricing and forget to include date columns in your spreadsheet, you could see the same 99010 error repeated for every single row. This is why reviewing your template structure before uploading is essential.