The cashier’s check is considered as a cash transaction since it instantly clears at the bank. You can use it as a payment (for the purchases made) or bill payment. You can use this article for more information:
Resolution for 'cash transaction issue: 'how to enter cashier’s check?' available: Yes.
The cash transaction 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 cash transaction issue yourself by looking for a resolution described in the article. If it is a complex cash transaction issue or you are unable to solve the issue, you may contact us by clicking here or by using other cash transaction support options.
For more information about resolving issues related to cash transaction in Quickbooks/QBO or to get support for the issue 'how to enter cashier’s check?', click the link below: