Amount &1 &2 could not be uniquely assigned to a contract account

What causes this issue?

You wanted to post the amount in question on account. On the basis of
the selection specifications, the system found several receiving
contract accounts. However, the clearing algorithm installed for
clearing type &v3& only allows automatic posting on account if the
contract account is unique.

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?

Make your selection specifications precise.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.