If the name is not the same, that is the issue. A Payment processed at the Customer Level is never available to the Job, and vice versa. It also is not available across Jobs.

Run that AR Aging report. Look at Who has the credit and Who needs it, as if […]

Resolution for 'apply unapplied payment issue: 'How to apply unapplied payment and credit' available: Yes.

The apply unapplied payment 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 apply unapplied payment issue yourself by looking for a resolution described in the article. If it is a complex apply unapplied payment issue or you are unable to solve the issue, you may contact us by clicking here or by using other apply unapplied payment support options.

For more information about resolving issues related to apply unapplied payment in Quickbooks/QBO or to get support for the issue 'How to apply unapplied payment and credit', click the link below: