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jayalajayala 

set credentiuals for calling end point in callouts

My client call is

 System.debug(' callservice begin -- ');
    sapComDocumentSapRfcFunctions.ZCUSTOMER_HELPPortType stub  = new sapComDocumentSapRfcFunctions.ZCUSTOMER_HELPPortType();
    sapComDocumentSapRfcFunctions.ZCUSTOMER_HELP_Response_element result = stub.ZCUSTOMER_HELP(1,'jay');
    System.debug('result ---'+result);

 

Following is the error i am getting

 

11:16:14:220 CALLOUT_RESPONSE [28]|This service requires client certificate for authentication procedure.

 

 I am making just a http call. Do i need to setup any credentials for this like user name and password..? how can i set them .

 

Help is appreciated.