Describes the cause and action for error messages.
Error Message(English)：
data table invalid input cell
How to Use Excel Data Tables - Contextures
https://www.contextures.com/exceldatatables.html
Create a Data Table With 1 ...
https://www.contextures.com/exceldatatables.html#onevar
Create a Data Table With 2 ...
https://www.contextures.com/exceldatatables.html#twovar
What-if Analysis in Excel with a 2-input data table - YouTube
https://www.youtube.com/watch?v=n9MdkxnE_CA
https://www.youtube.com/watch?v=n9MdkxnE_CA
Correcting the Source Reference not Valid Error in a Pivot Table ...
https://www.got-it.ai/solutions/excel-chat/excel-tutorial/pivot-table/pivot-table-source-reference-n・・・
Using Data Validation to Prevent Invalid Data Entry in Excel - Lifewire
https://www.lifewire.com/use-data-validation-in-excel-4570856
Reject Invalid Dates in Excel - Easy Excel Tutorial
https://www.excel-easy.com/examples/reject-invalid-dates.html
More on data validation - Excel - Office Support - Office 365
https://support.office.com/en-ie/article/more-on-data-validation-f38dee73-9900-4ca6-9301-8a5f6e1f0c4・・・