Not Authorized to Invoke Service Operation

While testing a web service (via a CI), the following message came back (this is using soapUI):

<IBResponse type="error">

 <DefaultTitle>Integration Broker Response</DefaultTitle>

 <StatusCode>20</StatusCode>

 <MessageID>536</MessageID>

 <DefaultMessage>User USER not authorized to invoke Service Operation EXAMPLE. (158,536)</DefaultMessage>

 <MessageParameters>

 <Parameter>USER</Parameter>

 <Parameter>EXAMPLE</Parameter>

 </MessageParameters>

</IBResponse>

This relates to service operation security. Specifically, the user in question does not have security to the relevant service operation.

Here's how to check/update the service operation security:

PeopleTools > Integration Broker > Integration Setup > Service Operations

Open the service operation mentioned in the message.

On the service operation page, there will be a hyperlink labelled Service Operation Security. Click on that to bring up the service operation security settings (opens in a new tab/window).

Add a permission list that you know the user mentioned in your message has in their security settings.

Save and re-test.