Per Intuit:

“Is there a limit on how much data I can back up?

Yes. If you have the Company Data plan, you can back up one company file. If you have the Entire PC plan, you’re limited to 100GB of total storage, which includes all 45 days of backups you’ve stored.”

[…]

Resolution for 'Company Data plan issue: 'How do I use IDP for 5 companies in one Company files folder?' available: Yes.

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

For more information about resolving issues related to Company Data plan in Quickbooks/QBO or to get support for the issue 'How do I use IDP for 5 companies in one Company files folder?', click the link below:

Details