From this page, users can access the released versions of the IFX Business Message Specification (BMS). 

Access the BMS

Release Version 1.9.1  Release Version 2.4

License Statement

IFX Forum hereby grants to all users of the IFX Business Message Specification and Data Dictionary (the “Specification”) a perpetual, worldwide, royalty-free, nonexclusive, nontransferable license to (a) use the specification in the development of software and/or data compilations which facilitate electronic transmission of information in accordance with the Specification and otherwise implement the Specification in user’s products, and (b) market, reproduce, display, and distribute (in any medium known now or in the future) the Specification as implemented in user’s products. The foregoing rights may be sublicensed through multiple tiers of distribution, including resellers.

Other than as licensed herein, the IFX Forum shall retain all right, title and interest to any patent, copyrights, trade secrets or other proprietary rights (“Intellectual Property Rights”) in the Specification. Subject to all patent rights preserved by IFX Forum members pursuant to Section 5.1 of the “Membership Rules of the Interactive Financial Exchange Forum, Inc.”, users shall retain all right, title and interest to the Intellectual Property Rights in any products of user created using the Specification and any modifications, extensions or derivative works of the Specification that user develops or has developed on its behalf as permitted under this Agreement (the “Derivatives”), provided, however, that, users may not hold Derivatives out as being endorsed, sponsored by or affiliated with the IFX Forum.