Amazon error 99001: A value is required for this field
What does it mean?
A mandatory field was left out. It is the older, flat-file sibling of 90220.
How to fix it
Supply the value: map the field in your feed tool or fill it in your source.
Where do you fix it?
- In your product data (your source)
- In your feed tool: mapping, rule or channel setting
- 8058Required attributes are missing for the SKU
- 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
- 18448Required attributes are incomplete
Source
Summarised in our own words; Amazon's page is leading.