3606858 - 504 Error in BTP CAP Application which is connecting to S/4HANA

• 504 gateway timeout error occurs when calling a request from CAP application to S/4HANA on-premise system after 30s.
• The flow is: approuter --- srv-api ---> CAP service --- destination ---> backend (S/4HANA on premise system).
• In the destinations which is to backend, already add "HTML5.Timeout" in the additional property and set it as 120000 ms. But the issue persists.
• An example is:
  Reproduce the issue and collect HTTP trace following KBA 1990706.
  In the HTTP trace, there is a POST request to /<xxxxx>/odata/v4/<xx>/$batch completed with status 504.
  The content of the response is: Gateway Timeout
  

 "Image/data in this KBA is from SAP internal systems, sample data, or demo systems. Any resemblance to real data is purely coincidental."

• SAP Business Technology Platform -SAP BTP
• SAP Business Application Studio - SAP BAS
• SAP Cloud Application Programming Model - SAP CAP
• Cloud Foundry - CF

504, BTP CAP, S/4HANA, HTML5.Timeout, SAP BTP Application Router, mta.yaml, timeout, xs-app.json, gateway timeout , KBA , BC-CP-APR , SAP BTP Application Router , Problem