ListUserDefinedFieldsByCompanyId

### Security Policies * This API requires one of the following user roles: AccountAdmin, AccountOperator, AccountUser, BatchServiceAdmin, CompanyAdmin, CompanyUser, Compliance Root User, ComplianceAdmin, ComplianceUser, CSPAdmin, CSPTester, ECMAccountUser, ECMCompanyUser, FirmAdmin, FirmUser, ProStoresOperator, Registrar, SiteAdmin, SSTAdmin, SystemAdmin, TechnicalSupportAdmin, TechnicalSupportUser, TreasuryAdmin, TreasuryUser. * This API depends on the following active services:*Required* (...