how to test a "Member of M:N schema type" virtual attribute in mapping condition

It mention vrtMember='' in mapping condition, but it shows the error "Unable to cast object of type ''VI.Projector.Database.DatabaseSystemObjectData'' to type ''System.IComparable''

so my quest is how to determine the vrtMember is empty?

any one could help me, very thanks~~

It may help if you would be able to post your mapping condition, the datatypes of the properties you want to map, and so on.

Or you are going to contact support.

It may help if you would be able to post your mapping condition, the datatypes of the properties you want to map, and so on.

Or you are going to contact support.

Hi Markus,

Thanks the reply, because the "member" attribute of groupofnames in OpenLDAP is a MUST, so when create a group using Manager, 

we need provisioning a default member to groupofnames in OpenLDAP. In the case, I create an M:N system type attribute, vrtMember and use 

mapping condition to determine the vrtMember is EMPTY. I config  Left.vrtMember='' as a condition. When first create the group and no member assign, 

it is Ok to provisioning , but when I add account to the group, then the provisioning run, the error show as  

"Unable to cast object of type ''VI.Projector.Database.DatabaseSystemObjectData'' to type ''System.IComparable" .

I don't know why, please help, very thanks.

Thanks

David 

I suggest contacting support to help you out. They need to take a look at your synchronization project.