Amazon error 99040: No value provided for a named attribute
This explanation also covers: 99041, 99042
What does it mean?
A specific attribute has no value: the main image URL (99040), a named attribute (99041) or the item type (99042).
How to fix it
Supply the missing value.
Where do you fix it?
- In your product data (your source)
- 8058Required attributes are missing for the SKU
- 99001A value is required for this field
- 4000002A value for the attribute is required
- 99010A required value is missing from a group of fields
- 99006A value is required because dependent fields are filled
- 99013A primary field is empty while dependent fields have values
- 99019A valid value is required in one of two fields
- 99003A required value is missing for the variation theme
Source
Summarised in our own words; Amazon's page is leading.