Create Card-Based Subscription - 500 response

[sonarapi]

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?

[jenn_kh]

Hi, @sonarapi! Thank you for reaching out. One of our agents will look into this and get back to you soon. Until then, if any community members know a solution, please feel free to reply to this thread.

[API_Products]

Hi @sonarapi,

You can refer to the Visa Developer Error Codes page for cause and resolution. I've also copied and pasted the cause and resolution for the 500 error code below.

Internal Server Error Codes

HTTP STATUS	HTTP CODE	CAUSE/RESOLUTION
INTERNAL SERVER ERROR	500	Internal Server Error. Please contact Visa Support at developer@visa.com with a complete error message, full http request and response details.