Question:

Why does the {{customContent}} Approved Email token work online but not offline in Veeva CRM?

Answer:

The {{customContent}} tag is used in association with a custom object. Create a VMobile Object Configuration (VMOC) for the custom object to download the object information to the offline platform. If this is not done, the result of the tag is null.

Related Documentation:

CRM Help Documentation: 

• Approved Email Tokens
• Using VMobile Object Configurations