When a user creates a call, the Child Account field is still empty.
The following reasons will cause the Child Account field to be empty.
- The Enable Child Account setting is not enabled in the Veeva setting.
- The Location (zvod_Business_Account_vod__c) field is not placed on the Call page layout.
- The user has no Field-Level Security (FLS) for the Child Account field of the Call object.
CRM Help Documentation: Call Reporting with Child Accounts