Rule (target field: &2): Check aggregation 'Summation'

What causes this issue?

The selected aggregation behavior <ZK>summation </>(or <ZK>maximum </>or
<ZK>minimum</>) should not be used for the target field &v2&. The
DataSource &v3& is delta-enabled. The additive update can result in an
identical key due when you load deltas.
Example: If 10 items are changed to 20 items, 30 items might be returned
instead of the 20 items expected.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Check whether the selected aggregation behavior is correct.

Procedure for System Administrators

Internal rule ID &V1&

Error message extract from SAP system. Copyright SAP SE.