a0d929ca_WSRP_v2_0_Specification__Statement_text
[#] CS159 [Section] 9.3 [Statement text] 
Tokens needing uniqueness on the aggregated page MUST be encoded to a Portlet-instance specific namespace [A301]. The Portlet MAY do this by prefixing the name of the resource with the namespacePrefix from the RuntimeContext structure.
WSRP v2.0 Specification
Statement text