Reference
EXTERNAL_COLLECTION_METHOD_NOT_ALLOWED
The channel does not record payment by this method
The channel does not record payment by this method
HTTP status 403 Forbidden, code EXTERNAL_COLLECTION_METHOD_NOT_ALLOWED.
What it means#
The order's channel records payment it collected itself, but not by the method you named: paymentMethod is not in the channel's externalCollection.methods.
What to do#
Record it with one of the channel's methods, or have the channel's methods widened (which needs ledger.settle on the channel's account).
On the wire#
Every error response carrying this code names this page in error.moreInfo,
with the request id in the query string. See Error codes for
the response shape and the list of every code.