GDPR Compliance

Am looking into GDPR compliance regarding data we maintain using Zoho Creator. Although Zoho has published some info on: https://www.zoho.com/gdpr.html

I've been looking into implications about certain types of data we maintain on Zoho Creator and my understanding is that we need to keep a log of any changes to data. ie If a record is changed a log should be kept of the old value of the field and date and time it was changed and user that changed it.

My question is is there is system-wide setting to keep field value history for every record?
If there isn't we may need to migrate our data onto another platform - something which would be major headache - and we'd seek to avoid if at all possible!

Many thanks for any help or advice. If anyone else looking into GDPR compliance and wishes to share any thoughts or insights it would be greatly appreciated.