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Channel invalid content error

ERROR: 63021

error-63021 page anchor

Message contains content that is rejected or unsupported by the messaging channel.

Possible Causes

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  • Unable to upload the media used in the message because it is not supported by the messaging channel.
  • Length of the parameters and the template text exceeds the allowed length of 1024 for WhatsApp.
  • Inspect the media files being sent and confirm their MIME type is in fact supported by the messaging channel.
  • Confirm WhatsApp template sends do not exceed 1024 characters, which can occur when placeholder text substitutions or translations are too long.

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