Hi 

we tried to configure global-error policy, but we are facing issues and unable to capture 400 Bad request.

1. Global error Policy is not triggering until we configure throw action in the API assembly Flow.Is this how it works?, I assume it should trigger for any error returned from API.
2. Even if have throw action configured for specific 400 Bad Request Error, global-error-policy is not triggered.Currently its returning as below instead of custom json FYR:     {
       "httpCode": "400",
       "httpMessage": "Bad Request",
       "moreInformation": "One or more required API parameters are missing in the API request."
   }
3. sample global error policy we configured as below. and i can see catch config in Datapower API Rule.
   global-policy: 1.0.0
    
   info:
     name: sample-error-policy
     title: Sample Error Policy
     version: 2.0.0
    
   gateways:
     - datapower-api-gateway
    
   assembly:
     catch:
       - errors:
           - ConnectionError
           - UnauthorizedError
           - BadRequestError
           - ForbiddenError
           - SOAPError
         execute:   
             - xslt:
                 version: 2.0.0
                 title: xslt
                 input: false
                 source:  <xslt/> to return custom json

------------------------------
pratap vadlapati
------------------------------

Duplicate post made part of https://community.ibm.com/community/user/integration/discussion/gateway-script-error-and-exception-handling?ReturnUrl=%2fcommunity%2fuser%2fintegration%2fcommunities%2fcommunity-home%2fdigestviewer%3fcommunitykey%3d2106cca0-a9f9-45c6-9b28-01a28f4ce947 was answered there.
Regards,

Steve