In response to FIF questions, ISG has provided FIF with written guidance on the enhanced EBS record layout and LOPR. See relevant documents below.

Relevant Documents

February 26, 2013: ISG Response to FIF Questions on the Primary and Contra Party ID Fields of the enhanced EBS Record Layout
ISG responded to FIF questions on the new record layout. Some of these questions have been addressed in the EBS FAQs.

May 4, 2012 - ISG Response to FIF Member Questions on LOPR
This response was provided by the US option exchange members of the ISG and FINRA on May 4, 2012 in response to FIF questions presented in the FIF LOPR Discussion Document.