Still waiting on a resolution from SAP.
However we can display the purchase order ok when we use this link
http://xxx-xxx-xxx/sap/bc/webdynpro/sapsrm/wda_l_fpm_oif?sap-
client=500&sap-ep-tstamp=20140926123714&sap-ep-version=7&sap-
ie=EmulateIE8&sap-language=EN&sap-nwbc- etc
Is there any specific reasoning that SAP uses the OBN link in the email???
http://xxxx/~canvas;window=app/obn/po.display/