Some customers use one CRM organization for multiple countries. Per the business need, the Enable Child Account Veeva Setting needs to be enabled for the Japan market, but the other markets do not.
When Multichannel Cycle Plan (MCCP) is configured for all markets, should Enable Child Account Veeva Setting be enabled for MCCP integration user profile in the multi-country CRM organization?
Enabling the Enable Child Account Veeva Setting for the MCCP integration user profile adds an additional check on the data to see if the target is a child account. If it's not a child account, then it treats the target as a regular account.
So the Enable Child Account Veeva Setting should be enabled for the MCCP integration user profile. As long as the MCCP data is set up properly, the MCCP process can calculate the progress for both child accounts and regular account targets.
CRM Help Documentation: Supporting MCCP Child Accounts