Question Re: Request failed with status code 503 in SAP BUILD CODE in Technology Q&A

Request failed with status code 503 in SAP BUILD CODE

s_sudhirkumar — Wed, 08 Oct 2025 18:48:58 GMT

Hello All,

We’re trying to connect our backend SAP S/4HANA system with SAP Build Code, but we’re getting a 503 Service Unavailable error during integration.
Could someone please guide us on what configuration might be missing?

Step we followed so far..

1, In BTP Cockpit, Establish a Destination xxx_xx_BuildCode with Basic Authentication with Additional properties as

sap.processautomation.enabled=true
MobileEnabled=true
WebIDEEnabled=true
WebIDEUsage=odata_abap,dev_abap,odata_c4c,odata_gen,apihub_sandbox
sap.build.usage=odata_gen
HTML5.DynamicDestination=true
isCatalog=true
sap.applicationdevelopment.actions.enabled=true
product.name=SAP S/4HANA
BuildApps.Enabled=true
HTML5.ForwardAuthToken=true
BuildApps.ApiType=odata,rest
appgyver.Enabled=true
Authentication=BasicAuthentication
HTML5.Timeout=60000

2. Verified in BTP Cockpit → Destination shows “Reachable”

3. Opened SAP Build App → Control Tower → Add Destination and successfully added the same destination.

4, Created a project (Web + Mobile) → Navigated to Integration tab → Add Integration → BTP Destination → Selected the same destination. At this point, we receive the error:

Has anyone experienced this issue before or can suggest possible reasons for this 503 error?

Thanks in advance.

Re: Request failed with status code 503 in SAP BUILD CODE

agpekka — Thu, 09 Oct 2025 09:04:56 GMT

Hello,

Re: Request failed with status code 503 in SAP BUILD CODE

agpekka — Thu, 09 Oct 2025 09:11:00 GMT

Hello,

Even though Connection shows green light, I'd recommend you to check logs from cloud connector as most probable cause is some certicate error or that connectivity url is blocked by some proxy.
e.g. connectivity.eu10.apps.build.cloud.sap should be allowed for eu10 if you are using eu10. Replace with us10/ap10 etc depending on the datacenter you use.

Also I highly recommend using as few additional properties as possible. You should hardly ever use e.g. ForwardAuthToken.

-Pekka

Re: Request failed with status code 503 in SAP BUILD CODE

agpekka — Thu, 09 Oct 2025 09:12:11 GMT

Also ApiType is either rest or odata but not both