AMEX is one of the accepted cards through QuickBooks Merchant services.
Resolution for 'accepted cards issue: 'Can quickbooks accept American Express?' available: Yes.
The accepted cards 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 accepted cards issue yourself by looking for a resolution described in the article. If it is a complex accepted cards issue or you are unable to solve the issue, you may contact us by clicking here or by using other accepted cards support options.
For more information about resolving issues related to accepted cards in Quickbooks/QBO or to get support for the issue 'Can quickbooks accept American Express?', click the link below: