[CAR-OAA]-Get token from SAP car oaa via sap po

Hello Guys,

SAP CAR provided to us REST API to get Access Token. We can call this API directly from SAP CAR system via URL:

http://XXX:YYY/sap/car/rest/oaa/sourcing?sap-client=[your CAR Client]

XXX: Your CAR Host Name

YYY: Port

But in some scenarios, you don’t want third-party system access directly to SAP CAR, Integration has to go through SAP PO then you can follow the tips below to get “X-csrf-Token“.

When we request a token to SAP CAR, it does not return credentials in the response payload. The token and Cookie send back in the message header. In this case, we need to make UDF read header attributes.

The simple data flow to show you the systems involved.

UDF to get Dynamic Configuration from HTTP Header

In UDF, we had two parameters, Namespace and Name of REST Adapter attribute.

public String SetDynamicConfiguration(String namespace, String name, String value, String refvalue, Container container) throws StreamTransformationException
{
try
{
DynamicConfiguration conf = (DynamicConfiguration)container.getTransformationParameters().get(StreamTransformationConstants.DYNAMIC_CONFIGURATION); 
DynamicConfigurationKey key=DynamicConfigurationKey.create(namespace,name); 
//return "ok";
conf.put(key,value);
return refvalue;
}
catch(Exception  ex)
{
  return refvalue;
}