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Resolution for 'company access issue: 'GET request sent by postman to sandbox gets response “Business Validation Error 6000 Unexpected critical company access error -20000” but works when sent by API explorer.' available: Yes.

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

For more information about resolving issues related to company access in Quickbooks/QBO or to get support for the issue 'GET request sent by postman to sandbox gets response “Business Validation Error 6000 Unexpected critical company access error -20000” but works when sent by API explorer.', click the link below: