Resolution for '1 payment link issue: 'I need to change an invoice from paid to unpaid' available: Yes.
The 1 payment link 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 1 payment link issue yourself by looking for a resolution described in the article. If it is a complex 1 payment link issue or you are unable to solve the issue, you may contact us by clicking here or by using other 1 payment link support options.
For more information about resolving issues related to 1 payment link in Quickbooks/QBO or to get support for the issue 'I need to change an invoice from paid to unpaid', click the link below: