The National Archive of Eldoria, a newly formed nation, is undertaking a project to digitize historical land records from its various municipalities. Each municipality currently uses its own unique system for identifying and cataloging land parcels, leading to significant inconsistencies across the nation. The National Archive aims to create a unified digital repository accessible to researchers and the public. The archive director, Anya Petrova, recognizes the need for standardization in location data to ensure interoperability and long-term preservation. Anya is aware of ISO 3166 but unsure how to best apply it in this context, given the varying levels of technological infrastructure and data management practices across the municipalities. Furthermore, there\'s resistance from some local authorities who prefer to maintain their existing systems. Considering the principles and applications of ISO 3166, which of the following actions would be MOST crucial for Anya to undertake in the initial phase of the digitization project to ensure the successful integration of location data into the unified digital repository?