User Filter Not Working for Entra ID Source

We are trying to apply a user filter in the aggregation settings for the Entra ID source. Currently, we are using the filter:

startsWith(employeeType, 'Employee')

However, we are encountering an error during the aggregation process.

Could you please help us understand if this filter syntax is correct or suggest the appropriate way to configure it? I will share a screenshot for reference.

is ‘employeeType’ in your schema, as its not in mine (sailpoint schema, not the actual schema in ENtra)

Would ‘userType’ be of any use?