The status bars next to your products shows how close your item data is to being published.
The status is shown at every level, from the main dashboard:

Down to the individual item level:

An easy way to see what needs to be filled in is by selecting the eye icon, and filtering for Empty and Required or Errors. As you fill in the remaining attributes, the progress bar will fill up.

Helpful tips:

• Search for Errors and Required to double check to make sure your information is up to date and correct.
• Searching for
Empty and Required is a great way to find the minimum amount of attributes needed in order to get to the Publish stage.
• Searching for
Errors only is a great way to find Conditional attributes that have slipped through.

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