Destination not found in my multitenant CAP app

Hello,

In my multitenant CAP app, I got an error when accessing an S/4HANA Cloud via Cloud SDK from my consumer subaccount. It works fine when accessing from my provider. My scenario is the following:

Perhaps it may seem a little weird the own s/4hana cloud system vs the provider subaccount, it is here just for test purposes.

When accessing https://provider-myapp-aa.cfapps.eu10.hana.ondemand.com/mobile/getData(cardTemplate=''), the own s4hc is reached successfully and data is retrieved but doing so from the consumer, https://consumer-myapp-aa.cfapps.eu10.hana.ondemand.com/mobile/getData(cardTemplate=''), I got the following error in the provider app:

2020-04-15T09:46:27.639+0000 [APP/PROC/WEB/0] OUT error calling api Error: Could not find a destination with name "s4n103C1"! Unable to execute request.
2020-04-15T09:46:27.639+0000 [APP/PROC/WEB/0] OUT     at Object.errorWithCause (/home/vcap/app/node_modules/@sap/cloud-sdk-core/node_modules/@sap/cloud-sdk-util/dist/error.js:14:20)
2020-04-15T09:46:27.639+0000 [APP/PROC/WEB/0] OUT     at /home/vcap/app/node_modules/@sap/cloud-sdk-core/dist/request-builder/request-builder-base.js:125:78
2020-04-15T09:46:27.639+0000 [APP/PROC/WEB/0] OUT     at process._tickCallback (internal/process/next_tick.js:68:7)
2020-04-15T09:46:27.639+0000 [APP/PROC/WEB/0] OUT Caused by:
2020-04-15T09:46:27.639+0000 [APP/PROC/WEB/0] OUT Error: FetchTokenError: Client credentials Grant failed! Request failed with status code 401
2020-04-15T09:46:27.639+0000 [APP/PROC/WEB/0] OUT     at Object.errorWithCause (/home/vcap/app/node_modules/@sap/cloud-sdk-core/node_modules/@sap/cloud-sdk-util/dist/error.js:14:20)
2020-04-15T09:46:27.639+0000 [APP/PROC/WEB/0] OUT     at accessTokenError (/home/vcap/app/node_modules/@sap/cloud-sdk-core/dist/scp-cf/xsuaa-service.js:166:29)
2020-04-15T09:46:27.639+0000 [APP/PROC/WEB/0] OUT     at /home/vcap/app/node_modules/@sap/cloud-sdk-core/dist/scp-cf/xsuaa-service.js:43:57
2020-04-15T09:46:27.639+0000 [APP/PROC/WEB/0] OUT     at process._tickCallback (internal/process/next_tick.js:68:7)
2020-04-15T09:46:27.639+0000 [APP/PROC/WEB/0] OUT Caused by:
2020-04-15T09:46:27.639+0000 [APP/PROC/WEB/0] OUT Error: Request failed with status code 401
2020-04-15T09:46:27.639+0000 [APP/PROC/WEB/0] OUT     at createError (/home/vcap/app/node_modules/axios/lib/core/createError.js:16:15)
2020-04-15T09:46:27.639+0000 [APP/PROC/WEB/0] OUT     at settle (/home/vcap/app/node_modules/axios/lib/core/settle.js:17:12)
2020-04-15T09:46:27.639+0000 [APP/PROC/WEB/0] OUT     at IncomingMessage.handleStreamEnd (/home/vcap/app/node_modules/axios/lib/adapters/http.js:237:11)
2020-04-15T09:46:27.639+0000 [APP/PROC/WEB/0] OUT     at IncomingMessage.emit (events.js:203:15)
2020-04-15T09:46:27.639+0000 [APP/PROC/WEB/0] OUT     at endReadableNT (_stream_readable.js:1145:12)
2020-04-15T09:46:27.639+0000 [APP/PROC/WEB/0] OUT     at process._tickCallback (internal/process/next_tick.js:63:19)

The destination s4n103C1 is created in the provider subaccount and I have made sure that the fields are well filled out. I tried creating the destination in the consumer subaccount and I got the same error.

Let me here remark that accessing other CAP services from the consumer subaccount (i.e https://consumer-myapp-aa.cfapps.eu10.hana.ondemand.com/mobile/books) works fine, the error occurs when accessing backend destinations via Cloud SDK.

The source code that raises the error is:

    var cloud_sdk_core_1 = require("@sap/cloud-sdk-core");
    const { serializeEntity } = require("@sap/cloud-sdk-core");
    
    // building the select fields array
    ....
     
    var jwt = retrieveJwt(req._.req)

    // call api
    const salesOrder = await SalesOrder
      .requestBuilder()
      .getAll()
      .select(...selectFields)        
      .filter(filters)
      .top(top)
      .execute({destinationName: destination, jwt: jwt}) 
      .then(result => result.map(so => serializeEntity(so, SalesOrder)))
      .catch(reason => {
          console.log('error calling api ', reason)
      })

This is my mta.yaml file:

_schema-version: 2.0.0
ID: myapp
version: 1.0.0
modules:
  - name: myapp-db
    type: hdb
    path: db
    parameters:
      memory: 256M
      disk-quota: 256M
    requires:
      - name: myapp-db-hdi-container
  - name: myapp-srv
    type: nodejs
    path: srv
    parameters:
      memory: 512M
      disk-quota: 512M
    provides:
      - name: srv_api
        properties:
          url: ${default-url}
    requires:
      - name: myapp-db-hdi-container
      - name: myapp-uaa    
      - name: myapp_destination
      - name: myapp_connectivity   
    properties:
      SAP_JWT_TRUST_ACL:
       - clientid: "*"
         identityzone: "*"     
      DEBUG : "false"     
  - name: myapp-ui
    type: nodejs
    path: app
    parameters:
      memory: 256M
      disk-quota: 256M
    requires:
      - name: myapp-uaa
      - name: srv_api
        group: destinations
        properties:
          forwardAuthToken: true
          strictSSL: true
          name: srv_api
          url: ~{url}
    properties:
      SAP_JWT_TRUST_ACL:
       - clientid: "*"
         identityzone: "*"  
      TENANT_HOST_PATTERN: "^(.*)-myapp-ui.cfapps.eu10.hana.ondemand.com"            
resources:
  - name: myapp-db-hdi-container
    type: com.sap.xs.hdi-container
    properties:
      hdi-container-name: ${service-name}
  - name: myapp-uaa
    type: org.cloudfoundry.managed-service
    parameters:
      service-plan: application
      service: xsuaa
      path: ./xs-security.json
      shared: true
      config:
        xsappname: myapp-${space}
  - name: myapp_destination
    type: org.cloudfoundry.managed-service
    parameters:
      service-plan: lite
      service: destination
  - name: myapp_connectivity
    type: org.cloudfoundry.managed-service
    parameters:
      service-plan: lite
      service: connectivity      

Any clues with this issue?

Thanks in advance.

Best regards,

Marc