Why can't I activate an Account/Contact/Lead for scheduling?

There can be several underlying reasons why a customer (Account, Contact, or Lead) cannot be activated. The same problem may appear both in manual and mass activation.

• Can the object type be activated for your organization?
  Your administrator can specify whether Accounts, Contacts and Leads can be activated in the organization settings for customer activation. For example: If Leads were configured as non-activatable, you cannot activate any Leads. You can check availability in the drop-down menu Data in which can be found on the page portatour®/Options/Customer Activation.
• Are there geo-coding error messages?
  There can be geo-coding errors during Mass Operations, see section Geoposition Warnings during Mass Activation. Error messages and unactivatable customers can be found in portatour®/Options/Geoposition Warnings.
• Are you the owner of a customer?
  In the Single sales rep per customer Mode only the owner can activate the respective customer.