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Helper V
Helper V

Re: The request operation is invalid. A value must be provided for item

I have 4 combo box and all 4 are from different table


Table 1: Asset

Table 2: Proof of identification

Table 3: Vehicle Type

Table 4: Visitor Type


All 4 tables i have sent in attachment

Community Support
Community Support

Re: The request operation is invalid. A value must be provided for item

Hi @nagaraj007 ,

I notice that you not only use drop down, but also use combo box.

These are two different controls.

Could you tell me

1)the formula in 'Contact Person' combo box Items' property?

4)what is receiptPhoto? what is its data type? I need to figure out whether "First(receiptPhoto).Url" is text type.

Try this formula:


'Visitor Type': Dropdown1.SelectedText.Value,
'Visitor Name': INPVISITORNAME.Text,
'Company Name': inpcompanyname.Text,
'Purpose of Visit': inppurpose.Text,
'Mobile No': inpmobile.Text,
Email: inpemail.Text,
Designation: inpdesignation.Text,
City: inpcity.Text,
Asset: Dropdown2_4.SelectedText.Value,
'Asset Desc.': inpassetdessc.Text,
'Proof of Identification': Dropdown2_2.SelectedText.Value,
'Identification No.': inpidentification.Text,
'Vehicle Type': Dropdown2_3.SelectedText.Value,
'Vehicle No.': inpvehicle.Text,
'No. of Visitors': inpnoofvisitors.Text,
'Details of Accompaning Visitors': inpdetailsofacco.Text,
'Contact Person': ComboBox1.Selected.'Contact Person', 
'Contact Person Email': inpvehicle_1.Text,
Signature: PenInput1.Image, 
Checkin: Now(),
'Visitor Photo': First(receiptPhoto).Url
'Last Page',

Please notice that you need to use dropdown_name.SelectedText.Value to represent the Value that you select in drop down.

You need to use textinput_name.Text to represent the value intextinput.

You need to use combobox_name.Selected.fieldname to represent the value select in combo box.

What's more, make sure that you have primary key in your table, or else you can not update it in powerapps.



Best regards,


Community Support Team _ Phoebe Liu
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

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