POST requests made to https://elara.api.barclays/open-banking/v2.0/account-requests with ostensibly valid headers/bodies are being rejected with 400 errors:
JBWEB000120: The request sent by the client was syntactically incorrect.
Example x-fapi-interaction-id
713b7167-21e5-4c1d-8540-be6a3d15928f
ed33b4dd-38eb-4453-a9d2-ae425a21a46b
0efd7526-1008-407a-8ed5-0355b7565e5a
1d8e8c77-9197-46aa-98a0-87f339d8dae7
bd878549-a675-441b-9068-399fcfaedd3a
NB requests with same credentials and payload to the v3.0+ equivalent endpoint https://telesto.api.barclays/open-banking/v3.1/aisp/account-access-consents have been successful