Your Combobox is based on Office 365 User records. You need to supply a SharePoint user record in order to set it properly. Please consider changing your Formula to the following: Patch('Front Desk Messages', Defaults('Front Desk Messages'), { Title:txt_ContactName.Text, 'OSARC Contact': { Claims:"i:0#.f|membership|" & Lower(cmb_OSARC.Selected.DisplayName), Department:"", DisplayName: cmb_OSARC.Selected.DisplayName, Email: cmb_OSARC.Selected.Mail, JobTitle:"", Picture:"" }, 'Contact Date':Date_Contact.SelectedDate, 'Contact Time':txt_ContactTime.Text, 'Contact Phone No':txt_ContactNumber.Text, 'Contact Email':txt_ContactEmail.Text, 'Contact Message':txt_ContactMessage.Text } ); Reset(txt_ContactName); Reset(cmb_OSARC); Reset(Date_Contact); Reset(txt_ContactTime); Reset(txt_ContactNumber); Reset(txt_ContactEmail); Reset(txt_ContactMessage) I hope this is helpful for you.