When using the "Get AD Object Property" task type any error results in Exit Code 77777 and the following error in the Output (error) "Exception in Task: Can not retrieve the proerperty value"
This also happens if a property you retrieve is simply empty in Active Directory but the object exists, for example if a user has no email address configured, or functional accounts without a first name. Aside from the typo in the error 😁 it would be good to be able to filter an empty property and give it a different error code. Now the only way around it is to ignore all error messages when using the "Get AD Object Property" task type.

Furthermore it would be good if you can retrieve multiple properties at the same time to speed up the retrieval of active directory information

Yes we also had this issue, it would be nice if there was a difference between a blank value and an invalid one although maybe AD doesn't make it easy to distinguish?