e-NMSN Software Interface Specification

Version 1.1

Publication Date: July 7, 2021

The electronic National Medical Support Notice (e-NMSN) process offers child support agencies,  employers, third-party processors, and plan administrators the opportunity to electronically exchange NMSNs. 

The Software Interface Specification (SIS) includes the flat file record layouts and XML schemas required to use the e-NMSN system.  The SIS also includes information about the No Programming Option available to employers, third-party processors, and plan administrators, and the process for receiving a file containing a portable document format (PDF) version of the NMSN and returning a PDF response. 


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