What is a consequence of having active validation rules on target fields in rollups?

When rollup summary fields are used in Salesforce, they aggregate data from related child records into a parent record. If there are active validation rules on the target fields where this aggregated data is being placed, the rollup summary process must comply with these validation rules.

If the data being aggregated violates any of the validation rules, the rollup will encounter an error at runtime because Salesforce prevents saving records that do not meet validation criteria. This means the rollup will fail to execute successfully for those specific records that trigger the validation rules, resulting in a disruption of the data integrity process that rollups are meant to enhance.

Understanding the implications of validation rules in this context is crucial, as it highlights the necessity of ensuring that validation rules align with the intended use of rollups. This means careful consideration is required when designing both validation rules and rollup summaries to ensure that they can function harmoniously without causing runtime failures.