This template merges information from the various sources that define the message format and associated standard codes. It serves as the worksheet to perform gap analysis (existing data vs. requested data) and map to the local data elements. It also serves as the underlying structure for the integration engine, provides mapping from local to standardized data elements, and links to the bound value set for vocabulary validation. Building Blocks developed an Implementation Workbook for the LOI order message and the LRI result message.