Moving field from tab to another error

Hello
Under “Field Management” I’m trying to move a Text Field from one tab to another, but getting (Duplicate column name 'cb_address') error.
Please advise

How are you trying to move it? Sounds like you're trying to save a copy. Edit the field and change the Tab parameter then click Save.

I just click on TAB, change the selected tab to another one, and click save, it doesn't save, and got the error.
Please see attached print screens.
Thank you

Your field is missing the mandatory cb_ prefix. When trying to save it's trying to fix the missing cb_ prefix. However, you already have a cb_address field so it can't save it as cb_address. Either delete cb_address or delete that address field. How was this field created? All non-plugin fields should be prefixed with cb_.

I did change the cb_ prefix (see attached file) and saved it, still getting the same error.
There is no other "cb_address" to be deleted, and I can't delete the existing address field because is associated with thousands of accounts.
This field was created over 10 years ago, so I don't remember how it was created.

Thank you

You get the same error because you have 2 address fields. 1 is named "address" and another is named "cb_address". When you try to save "address" it's trying to fix the missing cb_ prefix. The result is it tries to save as "cb_address", but it can't since "cb_address" already exists. You need to correct your duplicate field situation by getting rid of one of them.