Clearing variant &1 incompatible with clearing type &2

What causes this issue?

While processing promise to pay &V3&, you wanted to distribute the
amounts of the original items to the installment payments specified in
the promise to pay with a clearing variant. The clearing cannot be
posted for one of the following reasons:
You have not used a correct clearing variant for this business
transaction.
No clearing variant could be determined.

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 the relevant table settings for clearing control.
It must be possible, using the clearing variant, to distribute the
amount of the installment payment to the original items of the promise
to pay, without any amount left over. Therefore, you have to permit a
partial clearing of these items.
In addition, the clearing variant must not use rules for automatic
write-off of tolerance variances.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.