Thanks for your response Mark, this give me some light on the current issue I am facing. We used FPML version 4-5 to add some Custom headers like (WIB_Header) and few more which are added. When I take the Schemas from the Master, I get some errors like “OderAmended: Unable to resolve reference to type “TradeExecutionModified” in the name space “http://www.fpml.org/2010/FpML-5-0″” I think the reason for this is, there are some elements which are referred no more exists in the Master (Possible reason could be that the elements or attributes have been moved to some other view) As per my understanding “fpml-option-shared-4-5.xsd” is not equal to “fpml-option-shared-5-0.xsd” in Master is not Equal to “fpml-option-shared-5-0.xsd” in Confirmation, this can have some More or Less elements/Attributes. Please correct me If my understanding is wrong. Thanks in advance. Vikas
