When calling POST Create Card-Based Subscription API `https://sandbox.api.visa.com/core/v1/cardSubscriptions` we are getting a 500 response with the following message: 'IO connection issue encountered while trying invoke the backend'
This is the request body we are sending:
{"events":["card.transaction.authorized"],"vCardID":"v-038-3bc71789-ca14-421e-bf32-0181adfb014d","consentID":"f65fa689-0279-4e15-8549-61c3b6b591c1","callbackURL":"https://my.application"}
This is the response we are receiving:
<-- 500 https://sandbox.api.visa.com/core/v1/cardSubscriptions?apikey=REDACTED (1138ms)
Server: nginx
Date: Thu, 29 Feb 2024 17:39:05 GMT
Content-Length: 63
Connection: keep-alive
X-SERVED-BY: -5b54b9f6-8z9
X-CORRELATION-ID: 1709228344_620_1992890727_-5b54b9f6-8z9_VDP_WS
X-ERROR-ORIGIN: 9900
X-APP-STATUS: 500
Cache-Control: no-cache, no-store, must-revalidate
X-Frame-Options: SAMEORIGIN
X-XSS-Protection: 0
X-Content-Type-Options: nosniff
Strict-Transport-Security: max-age=31536000;includeSubdomains
Pragma: no-cache
Expires: -1
IO connection issue encountered while trying invoke the backend
<-- END HTTP (63-byte body)
Could you advise as to the possible reasons for this error response?
