Do you mean it can't be pressed?

If IsNull(Type) or Type="" Then
Msgbox "Enter a Type"
Else
'do what you normally do
End If

TYPE is going to be a reserved word, if that is what your field is called you may want to consider changing the name, or you're going to need to use brackets around it [Type]

Thank you. I entered the following as you said and changed the field name to PmtType. It does work.  However, If someone opens the Form they will see the following:
Amount:   $0.00
Pmt Type:

And a button that says "CLOSE".
The problem here is if the user tries to get out of the form afer entering nothing, they cannot.  The only way, once the VBA code is used is to enter something in the PmtType Field.   I was thinking of using an IIF or IF statement that basically says that if the amount field is $0.00 then close, otherwise run the rest of the VBA that you gave me.  I have been at a loss to create this wrinkle in the code.

If IsNull(PmtType) or PmtType="" Then
Msgbox "Enter a Payment Type (Cash, Check, Credit Card)"
Else
DoCmd.Close
End If

I recently posted this but did not get the result that I had hoped for. I have a form with 2 fields: PmtAmt and PmtType.  The amount is entered as a payment, for example 85.00. The next field is "PmtType". It is a dropdown field with 3 choices Cash, Check and CreditCard.  There is also a button called SaveBtn. Pressing that saves the information. What VBA can I use in the button to make sure that it cannot be filled if the "Type" field is left blank?
I was offered the following code which works but has is not complete for me.

If IsNull(PmtType) or PmtType="" Then
Msgbox "Enter a Type"
Else
'do what you normally do
End If

The problem that occurred:If someone opens the Form they will see the following:
Amount:   $0.00
Pmt Type:
And a button that says "CLOSE".
The problem here is if the user tries to get out of the form afer entering nothing, they cannot.  The only way, once the VBA code is used is to enter something in the PmtType Field.   I was thinking of using an IIF or IF statement that basically says that if the amount field is $0.00 then close, otherwise run the rest of the VBA that you gave me.  I have been at a loss to create this wrinkle in the code.

Here is the original code:
If IsNull(PmtType) or PmtType="" Then
Msgbox "Enter a Payment Type (Cash, Check, Credit Card)"
Else
DoCmd.Close
End If

I need something andded to the code above that allows me to exit when the "PmtAmt" is either "0.00" or "".

Is the record becoming dirty?

Keep everything in one post it gets super confusing to make multiple posts on the same subject and doesn't get any faster of a response.

Just add to it if you need more
If PmtAmt=0 or IsNull(PmtAmt) Then
'Close the form
Exit Sub
Else
If IsNull(PmtType) or PmtType="" Then
Msgbox "Enter a Type"
Else
'do what you normally do
End If
End If