Each step checks itself before letting you move on, and the message names the problem. The common ones:
- “Please select a valid address from the suggestions.” — you typed the address instead of picking it from the list.
- “Please add at least one service area.” — you chose Service Area but added none.
- “Please select a valid location type.” — no card chosen at step 3.
- Description too short — the minimum is 50 characters.
- Nothing happens on Publish — the terms box at step 6 is not ticked.
Still stuck
Check whether your phone number is verified, and whether you have reached your plan’s listing limit. Both stop a publish.