YES/No option no visible in Edit Column

Question

I have this column that I have created and and I wanted to change its type from multiple choice to an Yes/No option.

Unfortunately I don't see the option anymore.

Answer 1

No.

It is not possible to change the field type of existing choice column to Yes/No(check box) in SharePoint.

You can change choice column to only below column types:

1. Single line of text
2. Multiple lines of text
3. Choice (menu to choose from)
4. Number (1, 1.0, 100)
5. Currency ($, ¥, €)
6. Date and Time

EDIT:

You can change Yes/No column to below column types:

1. Single line of text
2. Multiple lines of text
3. Choice (menu to choose from)
4. Number (1, 1.0, 100)
5. Currency ($, ¥, €)
6. Yes/No (check box)

For Indexed Error:

If you want remove the indexing on Yes/No column, then follow below steps:

1. Go to List settings.
2. Scroll down to "Columns" section. After all columns, you can see an option Indexed columns. Select it.
3. You can see the list of all indexed columns here. Locate your Yes/No field in this list and click on it.
4. To delete this indexing, click on Delete.
5. Then again try to change the type Yes/No column.

Note:

1. Before deleting indexed column, make sure deleting it will not affect your list view when list crosses list view threshold.