You would use the Owner Name from the Other Names list for this.

And why is the business card being used for personal, in the first place? this is called Commingling, and invites scrutiny by the IRS.

For instance, if this entity is anything other than a Sole Proprietorship, you either are […]

Resolution for 'Business Only issue: 'Personal Transactions on Business Credit Cards' available: Yes.

The Business Only issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the Business Only issue yourself by looking for a resolution described in the article. If it is a complex Business Only issue or you are unable to solve the issue, you may contact us by clicking here or by using other Business Only support options.

For more information about resolving issues related to Business Only in Quickbooks/QBO or to get support for the issue 'Personal Transactions on Business Credit Cards', click the link below: