Does the publish warning name a specific field or marketplace requirement? Fill that missing value in the grid first. Most blocked submits come from an empty attribute or empty marketplace-specific field.

Is the field marked Required for Submission when it should not be? In Set up Attributes in Dropstitch, remove the rule or add a sensible default if the field should not block every item.

Is the missing field marketplace-specific? Make sure the destination marketplace is connected in Set up Marketplaces & Cross-listing, then fill the required marketplace field before retrying.

Did the item skip AI or default filling? If the field should normally be auto-populated, check the attribute default and AI settings instead of retrying publish without changing anything.

The publish warning no longer appears.

The product submits successfully to the selected marketplace.

Set up Attributes in Dropstitch

How to Publish to a Marketplace

Set up Marketplaces & Cross-listing