Session ID Cookie Error

We have an xpage with multiple rest service methods setup. That page is being called by SailPoint IIQ to create accounts, add roles... It seems that the Domino server errors when IIQ calls two successive methods. If IIQ calls getAccount, it works fine. If it calls createAccount, then addRole, we get the following sessionID error:

java.lang.IllegalArgumentException: Cookie name "[version: 0][name: SessionID][value: 95083BBE4C17C0E17400BFF4423BA0C32AB18E53][domain: our.server.com][path: /][expiry: null]" is a reserved token
at javax.servlet.http.Cookie.(Cookie.java:144)
at com.ibm.domino.xsp.bridge.http.servlet.XspCmdHttpServletRequest.parseCookieString(XspCmdHttpServletRequest.java:349)
at com.ibm.domino.xsp.bridge.http.servlet.XspCmdHttpServletRequest.getCookies(XspCmdHttpServletRequest.java:283)
at com.ibm.domino.xsp.bridge.http.servlet.XspCmdHttpServletRequest.readSessionId(XspCmdHttpServletRequest.java:185)
at com.ibm.domino.xsp.bridge.http.servlet.XspCmdHttpServletRequest.(XspCmdHttpServletRequest.java:156)
at com.ibm.domino.xsp.bridge.http.engine.XspCmdManager.service(XspCmdManager.java:256)

I tested this on a 10.0.1 FP5, 12.0.2 and 12.0.2 FP2. All versions give the same result.

Here is a snippet from the xPage:

<xe:restService id="addRole" pathInfo="addrole">
	<xe:this.service>
		<xe:customRestService serviceBean="web.service.AddRole" contentType="application/json"/>
	</xe:this.service>
</xe:restService>
<xe:restService id="removeRole" pathInfo="removerole">
	<xe:this.service>
		<xe:customRestService serviceBean="web.service.RemoveRole" contentType="application/json"/>
	</xe:this.service>
</xe:restService>
<xe:restService id="enableAccount" pathInfo="enableaccount">
	<xe:this.service>
		<xe:customRestService serviceBean="web.service.EnableAccount" contentType="application/json"/>
	</xe:this.service>
</xe:restService>
<xe:restService id="disableAccount" pathInfo="disableaccount">
	<xe:this.service>
		<xe:customRestService serviceBean="web.service.DisableAccount" contentType="application/json"/>
	</xe:this.service>
</xe:restService>
<xe:restService id="createAccount" pathInfo="createaccount">
	<xe:this.service>
		<xe:customRestService serviceBean="web.service.CreateAccount" contentType="application/json"/>
	</xe:this.service>
</xe:restService>

Any idea what the issue is.

Thanks,

Scott B.