Describes the cause and action for error messages.
Error Message(English)：
invalid characters for sheet name
Valid characters for Excel sheet names - Stack Overflow
https://stackoverflow.com/questions/451452/valid-characters-for-excel-sheet-names
Invalid character found in sheet title
https://stackoverflow.com/questions/21832364/invalid-character-found-in-sheet-title
Replacing multiple invalid characters in a sheet name
https://stackoverflow.com/questions/8590860/replacing-multiple-invalid-characters-in-a-sheet-name
I am getting invalid sheetnames from Excel files using ...
https://stackoverflow.com/questions/8517774/i-am-getting-invalid-sheetnames-from-excel-files-using-o・・・
Is there a limit on an Excel worksheet's name length?
https://stackoverflow.com/questions/3681868/is-there-a-limit-on-an-excel-worksheets-name-length
What are the rules for the name of an Excel worksheet? - Microsoft
https://social.technet.microsoft.com/Forums/office/en-US/5627d4c3-6023-4ca7-b3d4-f93419e3b560/what-a・・・
How to test if a sheet name is valid - Code VBA
http://codevba.com/excel/valid_sheet_name.htm
Worksheets: Naming Conventions ? The Excel Codex
http://www.excelcodex.com/2012/06/worksheets-naming-conventions/
Allow >31 characters in a sheet name ? Welcome to Excel's ...
https://excel.uservoice.com/forums/304921-excel-for-windows-desktop-application/suggestions/10770162・・・