Invalid Page Welcome Message for Messenger Destination Ads
Created by Sagar Jape ·  · Facebook Team — December 4, 2020 at 4:25 AM
Current State
We are currently investigating an issue where creating new ads with app_destination as MESSENGER results in the following error:

"error": {
"message": "Invalid parameter",
"type": "OAuthException",
"code": 100,
"error_subcode": 1815471,
"is_transient": false,
"error_user_title": "Invalid Page Welcome Message for Messenger Destination Ads",
"error_user_msg": "The Message Text (page_welcome_message) is invalid for ads with Messenger as destination.",
Start Time
December 2, 2020 at 3:00 PM
Last Update
December 10, 2020 at 5:13 PM
Updated: December 10, 2020 at 5:13 PM
Our engineering team has landed a fix and this should no longer be an issue for most cases. If you are still experiencing this error, please visit the Bug Report and provide an API call to help us... reproduce this further. Thanks for your patience as we investigated this issue.

For general issues on Ads Manager, please refer to the Ads Status Page at for up-to-date information.
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Updated: December 9, 2020 at 5:01 PM
Most of the Ad Accounts should be working correctly now and we are actively looking at resolving some of the edge cases. Please stay tuned for updates!
Updated: December 6, 2020 at 10:52 PM
We are actively investigating this issue for Messenger Ads.