Tables extended from the Account table cannot be set as Contact Accounts

[HIROSHI SATOH]

I created a table that extends from the Accounts table.
I was unable to register the data from the extended table as an account in Contacts.

What do you think could be the cause? Thank you in advance.

[HIROSHI SATOH]

It seems I can't register due to the following business rule. This business rule cannot be changed. Is there a workaround?

This item is read-only based on its protection policy.

「Sync account to company」

function onBefore(current, previous) {
	current.company = current.account;
	if(current.account.sys_class_name != 'customer_account')
		current.account = '';
}

[HIROSHI SATOH · Accepted solution]

We have concluded that the accounts table should not be expanded.