Is there a feature to flag or mark suppliers who are also customers & owe money to the organization

Summary:

Documentation or detailed steps on the feature to flag or mark suppliers who are also customers and owe money to the organization.

Content (please ensure you mask any confidential information):

Is there a feature to flag or mark suppliers who are also customers and owe money to the organization, so that any future payment to the supplier can be put on hold or just marked for reference?

We need any standard process and setup documents available for this feature.

We need any standard process and setup documents on the feature to flag or mark suppliers who are also customers and owe money to the organization.