From FIXwiki

FIX Message Component FinancingDetails

Component block is optionally used only for financing deals to identify the legal agreement under which the deal was made and other unique characteristics of the transaction. The AgreementDesc field refers to base standard documents such as MRA 1996 Repurchase Agreement, GMRA 2000 Bills Transaction (U.K.), MSLA 1993 Securities Loan - Amended 1998, for example.

Component Contents By FIX Version

Notes

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For example if you were writing a clarification on how to specify the "quantity" of an order in FIX, you might add the
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