Predefined list for button user input options

[EGardner7]

I am attempting to create a field in a quick capture project that will limit the submissions for a single line text user input to a list. I want the user to be able to type in a value, but if it does not match a value from the list, the submission will not go through and they have to retype it. I would just choose a choice list as the entry option, except the predefined list is over 40,000 records. This quick capture project is for editing the locations of water meters, and the predefined list is all the water meter number records. Does anyone have any ideas for how this could be accomplished? Any help would be greatly appreciated. 

[JohnathanHasthorpe]

@EGardner7 are there QR Codes on the water meters? You could configure a barcode scanner for a button user input.

QuickCapture supports dynamic choice lists that are based on values coming from a feature service, however, this is designed to support lists of around 2000 not 40,000.

Also, you mentioned editing of the locations of water meters. QuickCapture only allows the capture of new features. Are you planning to capture a new feature representing the correct location?