The Default to previous value option can be found in the field settings popup. When enabled, the field will automatically populate with the value that was previously entered into that field. This functionality will trigger on creating new records or editing existing records if the field value is empty. This allows data collectors to quickly capture new records when much of the values are the same for a series of records.

Notes

This is a localized feature, meaning that it only retains the last value that was entered on the app (Android, iOS, Web) being used. It will not automatically populate a value that was previously captured on another device. 

It’s intended to be a simple feature for speeding up individual collection tasks that are repetitive, to avoid having to re-type the same text string over and over for nearby records — valuable for things like text for street names or picking the same picklist items for successive records.

In cases where you need to “clear” fields with defaults, you can use a placeholder text or a special item in a choice field to indicate a “no value”.

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