This is actually how QB is designed and had been from the first multi user version year around 1998.  You may have somehow not noticed or just not hit the case, but it’s always worked this way. It prevents the two of you from recording an invoice with the same […]

Resolution for 'around 1998 issue: 'problem with posting invoices when others are logged in' available: Yes.

The around 1998 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 around 1998 issue yourself by looking for a resolution described in the article. If it is a complex around 1998 issue or you are unable to solve the issue, you may contact us by clicking here or by using other around 1998 support options.

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