V13.21 Table Multiselect field is erased/cleared after Save

I added a custom field in the Lead document of type table multi-select. When I create a new Lead the is saved perfectly. However, when I update the Lead and save it again the data of this field is cleared.

After update the Lead:

any solution?

Goto customize form and go to that field and select checkbox In List then update the customize form.

If you mean to check “List View” it gives me:
‘In List View’ not allowed for type Table MultiSelect

Go to In Multiselect doctype customize form.

,.
Thank you it solved the issue. I’ll appreciated if you explain why to select the checkbox In List.