a0d929ca_WSRP_v2_0_Specification__Statement_text
[#] CS174 [Section] 13 [Statement text] 
In addition, the SOAP 1.1 fault's detail element MUST contain the corresponding namespaced fault element from the WSRP v2 WSDL as its only content.
WSRP v2.0 Specification
Statement text