Is any default value set for the dropdown(choice field)?
In SharePoint, while creating a choice field by default the first choice option is set as a default value for the field/column.
Either you can change the default value or you can set it to the blank value.
Follow below steps to Check the default value:
- Go to the List in which you have this dropdown.
- Click in LIST from top ribbon.
- Select List Settings from the right side end of ribbon. It will open new list settings page.
- Scroll down to Columns section.
- Click on your dropdown field name.
- Scroll down to the bottom on new page, where you can see Default value.
- You can remove the choice if there is any to set the default value of dropdwon to blank.
