Is there some kind of “audit” system to track any change or modification of the data sent from the devices?

[Kal_Lam]

@mbejarano, this post discussed previously should help you solve your issue:

Track changes with Audit (Metadata)

Welcome back to the community @nat! KoBoToolbox now supports the audit metadata in its form builder UI: [Image 1] cc: @scherrie @wroos