Check subform is not null

P

pjy

Hi
Please can someone help me make this work.
I have a form with a subform that needs to be linked to a new entry therfore
I need the date field in the subform to be completed for this to happen. I
would like a warning message to appear if the date field on the subform has
not been filled, and also not to allow the update of the data entered in the
main form until the subform has an entry...Please help.

Pat
 
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