d.velop cloud migration defines a limit for the maximum number of documents that you can migrate. You can find the limit in the product description for d.velop cloud migration.

The connector logs when the limit is close to being reached. A warning message is displayed in good time on the migration interface. If you continue with the migration anyway, it will stop automatically when the limit is reached. 

If you have reached the document limit, create a support ticket under support@d-velop.de, specifying your tenant name. d.velop AG will then support you with the next steps.