I'm trying to filter a column of type lookup from a list using this method.
/_vti_bin/ListData.svc/Collections()?$expand=Departments&$filter=Departments/Title eq 'Sales'
And its outputting the following error:
<message xml:lang="en-US">No property 'Title' exists in type 'System.Collections.Generic.IEnumerable`1[[Microsoft.SharePoint.Linq.DataServiceEntity, Microsoft.SharePoint.Linq, Version=184.108.40.206, Culture=neutral, PublicKeyToken=71e9bce111e9429c]]' at position 12.</message>
And found out that below does work in displaying the departments title, through selecting, meaning title does exist.
Am I missing something to be able to filter from a multiple lookup column?