Describes the cause and action for error messages.
Error Message(English)：
data validation excel too small
Increase the Data Validation List Items Font Size ? Welcome to ...
https://excel.uservoice.com/forums/304921-excel-for-windows-desktop-application/suggestions/19305067・・・
Data Validation Width is too Small in Microsoft Excel 2010 | VBA
https://www.exceltip.com/vba/data-validation-width.html
Excel Data Validation Tips and Troubleshooting - Contextures
https://www.contextures.com/xlDataVal08.html
Excel Data Validation Guide | Exceljet
https://exceljet.net/excel-data-validation-guide
How-To Add Drop-Down Lists And Data Validation To Excel 2010 ...
https://www.groovypost.com/howto/microsoft/add-drop-down-menu-and-data-validation-excel-office-2010-・・・
Data validation in Excel: how to add, use and remove - Ablebits.com
https://www.ablebits.com/office-addins-blog/2017/08/16/data-validation-excel/
Excel Dropdowns Done Right - Analytics Demystified
https://analyticsdemystified.com/excel-tips/excel-dropdowns-done-right/
Excel Magic Trick 548: Data Validation Drop-Down List In A Cell Same ...
https://www.youtube.com/watch?v=dk-l80bBa4g
https://www.youtube.com/watch?v=dk-l80bBa4g