If you receive this fax error , for example:  “Fax Server Error: Invalid fax number 8881231234 for organization 00D5X000002U1haAAA” and the error shows a different fax number than the one assigned to your org, the source of the error could be that you have an old trial fax number saved in a test record, tied to a process, or in the app authorization.

Troubleshooting steps:

  • Open the Fax Configuration tab.
    • In General Settings section, check the value in “Available Fax Numbers” field. If it is incorrect, click “Edit”, update the value to your assigned fax number, then refresh the page. Check to see if it resolves the error.
    • In Field Settings section, check each field setting to verify that the correct fax number is listed in the “Organization Fax Number”, then refresh the page. Check to see if it resolves the error.
  • Check the field settings in fax automation to ensure the fax numbers in any field settings or referenced fields are accurate. For example, if you have any test records, check that the fax number for each record is correct.