Describes the cause and action for error messages.
Error Message(English)：
data validation not available excel
What is data validation in ...
https://www.ablebits.com/office-addins-blog/2017/08/16/data-validation-excel/#what-is-data-validatio・・・
How to add data validation ...
https://www.ablebits.com/office-addins-blog/2017/08/16/data-validation-excel/#howto-add-data-validat・・・
Excel data validation ...
https://www.ablebits.com/office-addins-blog/2017/08/16/data-validation-excel/#data-validation-exampl・・・
Excel Data Validation Tips and Troubleshooting - Contextures
https://www.contextures.com/xlDataVal08.html
Data Validation Combo Box
https://www.contextures.com/xlDataVal10.html
Dependent Drop Down
https://www.contextures.com/xlDataVal13.html
Select Multiple Items from ...
https://www.contextures.com/excel-data-validation-listbox.html
Excel troubleshooting ? why does data validation work on my desktop ...
https://ion.icaew.com/itcounts/b/weblog/posts/excel-troubleshooting-why-does-data-validation-work-on・・・
Why is data validation disabled in Excel? - Quora
https://www.quora.com/Why-is-data-validation-disabled-in-Excel