Describes the cause and action for error messages.
Error Message(English)：
vlookup when not found
6 Reasons Why Your VLOOKUP is Not Working - Ablebits.com
https://www.ablebits.com/office-addins-blog/2014/04/09/why-excel-vlookup-not-working/
Excel VLOOKUP not working - fixing N/A, NAME, VALUE errors ...
https://www.ablebits.com/office-addins-blog/2014/08/27/excel-vlookup-not-working/
Troubleshooting VLOOKUP ...
https://www.ablebits.com/office-addins-blog/2014/08/27/excel-vlookup-not-working/#vlookup-na-error
Fixing #VALUE error in ...
https://www.ablebits.com/office-addins-blog/2014/08/27/excel-vlookup-not-working/#vlookup-value-erro・・・
VLOOKUP not working ...
https://www.ablebits.com/office-addins-blog/2014/08/27/excel-vlookup-not-working/#vlookup-not-work
Excel IFERROR with VLOOKUP - trap errors and do sequential Vlookups
https://www.ablebits.com/office-addins-blog/2018/02/15/excel-iferror-vlookup/
How to use IFERROR with ...
https://www.ablebits.com/office-addins-blog/2018/02/15/excel-iferror-vlookup/#IFERROR-VLOOKUP-handle・・・
Vlookup and return your ...
https://www.ablebits.com/office-addins-blog/2018/02/15/excel-iferror-vlookup/#na-error-custom-text
How to correct a #N/A error in the VLOOKUP function - Office Support
https://support.office.com/en-ie/article/how-to-correct-a-n-a-error-in-the-vlookup-function-e037d763・・・