If an authentication mechanism supports the addition of attributes to the credential, you can use the tagvalue_always attribute to define which attributes are always inserted into the HTTP stream. Examples of such authentication mechanisms include EAI and OAuth authentication.
Add the extended attribute tagvalue_always to the credential to define the attributes that are always included in the HTTP stream. The format of this attribute is:
<attribute name>[:<header name>],...The attribute name field corresponds to the name of the attribute that is to be inserted into the HTTP stream. The optional header name field contains the name of the HTTP header that holds the attribute value. The attribute name is used as the name of the HTTP header if no header name field is specified. Multiple attributes can be specified, with each attribute delineated by a comma. Attributes with multiple values are inserted into a single header with each attribute value separated by a comma.