Combobox Default item

[straiderox2]

Good morning friends.
I have an app that I use on an excel list. When I make a new form one of the items is in a combobox and the user can select it. Now when I try to edit the item it opens a text box. I tried to change a combo box to appear but it is not accepting, I put the Parent Default does not work. I attached the error photo.

[VijayTailor]

 @straiderox2 ,

Please set the DatacardValue ( ComboBox)  and Set the Properties "DefaultSeletedItem" [DatacardValue.Selected.Value].

Please try this.
Hope it will help you to resolve your Issue.

For reference below Image. 

[v-yutliu-msft · Accepted solution]

Hi @straiderox2 ,

Do you want to use a combo box to display a text type field?

Please notice that field in excel are all text type or number type.

Firstly, let me explain where's your problem:

combo box' DefaultSelectedItems should be set to a record or a table.

Since this field is a text type, so I believe "Parent.Default" in this datacard should be a value.

You should set like this:
1)combo box's Items:

exceltablename

//please replace with your excel table name

combo box's primary text to the field that you want to display in this combo box

2)combo box's DefaultSelectedItems:

ThisItem

3)This datacard's Update:

ComboBoxname.Selected.fieldname

//please replace with this combo box name and this fieldname

Best regards,