Message templates can be rejected for a number of reasons, including:
If your template has been rejected, please review the above possible causes, update your template as needed, and resubmit. Often times a very minor update will result in an approval the next time you attempt to submit.
If you are unable to resolve the issue and believe the template has been rejected in error, there is an appeal process:
Unfortunately, Salesforce has no ability to impact decisions related to WhatsApp Message Template approvals.
If your Message Template has been rejected along with the appeal and/or you would like additional details on the rejection reason(s), you can open a case with Salesforce support with the following information:
000679215

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