The Open Geospatial Consortium (OGC) is requesting public comment on the candidate Deformation Model Functional Model Abstract Specification Topic and the Geodetic data Grid eXchange Format (GGXF) Standard. Comments are due by May 19, 2023. These two Standards seek to improve the accuracy and exchange of coordinate references. The Deformation Model Functional Model is a conceptual model proposed as an OGC Abstract Specification Topic to standardize how deformation of the Earth’s surface can be consistently described. The Deformation Model Functional Model leverages the Geodetic data Grid eXchange Format (GGXF), a standardized means to describe regularly gridded geodetic information. GGXF also supports many other geodetic data types, particularly gridded data, supporting transformation of coordinates.