a0d929ca_WSRP_v2_0_Specification__Statement_text
[#] CS211 [Section] 9.2.1.1.3.4 [Statement text] 
[wsrp-resourceState]: The value of this portlet URL parameter defines the state which the Consumer MUST send in the resourceState field of the ResourceParams structure when the URL is activated. If this parameter is missing, the Consumer MUST NOT supply a value in the resourceState field of the ResourceParams structure.
WSRP v2.0 Specification
Statement text