Could not fetch JWT bearer token for service of type xsuaa

[infosail]

Describe the Bug

After the cloud-sdk upgrade (3.11.0 -> 3.20.0), our code (see below) throws an error "Could not fetch JWT bearer token for service of type xsuaa: HTTP request [XsuaaService.fetchJwtBearerToken] to https://appgyver-eu10-subscription-provider.authentication.cert.eu10.hana.ondemand.com/oauth/token timed out after 2000 ms.
at /app/node_modules/@sap-cloud-sdk/connectivity/dist/scp-cf/xsuaa-service.js:77:15" in one customer's account. This error occurs randomly and seems account specific.

Steps to Reproduce

getDestinationFromDestinationService({
      destinationName,
      jwt: retrieveJwt(req),
      iasToXsuaaTokenExchange: true,
      useCache,
      selectionStrategy: alwaysSubscriber,
    });

Expected Behavior

The fetchJwtBearerToken() always return user token successfully.

Screenshots

No response

Used Versions

• Node version: 16.14.0
• NPM version: 8.3.1
• SAP Cloud SDK version: 3.20.0

Code Examples

No response

Log File

No response

Affected Development Phase

Production

Impact

Blocked

Timeline

The customer complained that their work is halted due to the error in view of their tight schedule.

Additional Context

No response

[infosail]

The error does not occur in the customer's Sydney subaccount but in the Frankfurt subaccount.

The customer subscribed our service, which calls Cloud SDK internally, into his subaccounts.

[KavithaSiva]

Hi @infosail,

Apologies for not answering earlier, we seemed to have missed this issue.
Does the issue still persist?
As you mentioned that this is sub-account specific, we have doubts if this issue is related to Cloud SDK, we think it could be a setup issue.
Could you please attach debug logs for when the error occurs, this would enable us to check further.

Regards,
Kavitha