> ## Documentation Index > Fetch the complete documentation index at: https://hc.saas-manager.biz.nuro.jp/llms.txt > Use this file to discover all available pages before exploring further. # 2026/2/20 Release!! > Improved custom field identifiers and optimized API structure to enhance data management reliability. This increases data visibility and streamlines operations including external integrations. 2026/2/20 Release!! ## API Category Structure Optimization and Improved Visibility API schema validation has been strengthened and the category structure has been reorganized for greater clarity. Display rules based on data availability have also been established, reducing information noise. ### Benefits of This Feature **Faster information discovery**: Optimizing the category structure enables faster access to the data you need. **Focus on important data**: Fields with no data are hidden from the screen. This eliminates irrelevant information so you can focus on what matters. **High system reliability**: Compatibility rules with previous versions have been strictly established. You can use features with confidence while minimizing impact on existing integrations. ## Custom Field Identifiers (Field ID Name) Are Now Editable Custom fields were previously managed with auto-generated identifiers such as "text\_1" and "text\_2". You can now set and edit more intuitive, readable "Field ID Names" for them. ### Benefits of This Feature **Improved data reliability**: Naming fields to accurately reflect their content helps prevent management errors. **Flexible configuration to meet your needs**: Set ID names that align with your organization's operational rules. This improves usability. **More efficient system integrations**: When using the API for data integrations, fields are easier to identify. This reduces maintenance effort. ## How to Use For the Public API, please refer to the Public API documentation. If you have any questions or requests, please feel free to contact our support team.