Meta implemented a policy to limit the number of marketing conversations a user receives from any business over a specific timeframe, starting with a small number of conversations that are less likely to be read.
Note that the limit is determined based on the number of marketing template messages that person has already received from any business, and is not related to your business specifically.
The limit only applies to marketing template messages that would normally open a new marketing conversation. If a marketing conversation is already open between you and a WhatsApp user, marketing template messages sent to the user will not be affected. Further marketing template messages can only be sent in an open marketing conversation if the person responds to any message.
Example:
If a marketing template message is not delivered to a given user due to the limit, Cloud API will return error code 131049 with the description “This message was not delivered to maintain a healthy ecosystem engagement.” See error code: 131049 in Error Messages.
If you do receive one this error code and suspect it is due to the limit, avoid immediately resending the template message, as it will only result in another error response. Instead, retry in increasing larger time increments until the message is delivered, since the limit may be in effect for differing periods of time.