a0d929ca_WSRP_v2_0_Specification__Statement_text
[#] CS177 [Section] 9.2.1.1.3.6 [Statement text] 
Normally this occurs if either the referenced resource or a secondary resource which this resource MAY contain URIs with a wsrp-urlType of render or blockingAction.
WSRP v2.0 Specification
Statement text