The first released version of a master data dictionary transfer shall be 1.00. Invalid sequence would be 1.0, 1.10, 1.20. Another invalid sequence would be 1.00, 1.01, 1.02, 2.03. The numbering scheme is intended to help the receiver of a transfer decide which version of a data dictionary is required. The modules must be named in such a way as to not cause module name conflicts with any module in a Topological Vector Profile transfer.
Examples are an agency abbreviation or a data model abbreviation.
Such file extenders are optional. The following restrictions apply to any spatial data transfer that requires the use of a master data dictionary. This transfer shall make no references via foreign identifier to module records of the master data dictionary. No module names or file names reserved for a data dictionary transfer shall be used in the spatial data transfer. To indicate that this transfer requires a master data dictionary, the following modules shall include the following information.