This error occurred because certain attributes (columns) have length requirements.
Columns with Length Restrictions:
- Parent Unique ID: must be 50 characters or fewer
- Unique ID: must be 50 characters or fewer
- Product Name: must be less than 300 characters
- Tags: minimum of two (2) tags and maximum of ten (10)
- Extra Image URL: You may have up to 20 image URLs
Check to make sure all cells in the "Parent Unique ID" and "Unique ID" columns contain no more than 50 characters. All cells under the "Tags" column may have no more than 10 tags and you may include no more than 20 image URLs in the "Extra Image URL" column.