Amazon error 99019: A valid value is required in one of two fields
What does it mean?
At least one of two fields must be filled, for example brand or manufacturer, and both are empty.
How to fix it
Fill at least one of the two fields.
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
- 99003A required value is missing for the variation theme
- 18448Required attributes are incomplete
Source
Summarised in our own words; Amazon's page is leading.