Where: This change applies to Lightning Experience and Salesforce Classic in Enterprise, Performance, Unlimited, and Developer editions.
How: For example, a conversion between incompatible field types causes field data to be set to null in the corresponding records. The conversion generates a change event for all affected records. The following are a few conversions of incompatible fields.
- Changing a Date or Date/Time field to another field type and vice versa
- Changing a Checkbox field to another field type
- Changing a Picklist (Multi-Select) field to another field type
Other conversions, such as those that preserve or truncate field values, don’t generate events.