Total of the positive NPVs of transactions in a netting group is initial

What causes this issue?

The total of the positive net present values of all transactions in a
netting group (&V1&) is zero, although the total balance generated by
positive and negative net present values (&V2&) is greater than zero.

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

System Response

The net/gross ratio (quotient of the total of all net present values
and the total of all positive net present values) cannot be determined.
Therefore, the system is also unable to determine the attributable
amount of the netting group.

How to fix this error?

Inform SAP.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.