=== Enable Value Validation ===
Check the ''NEEDSVALIDATION'' attribute of the MetaProperty to enable value validation and let the system explicitely store a validation time stamp information in the database. This is particularly used on the mobile client in combination with the [[CLS_TASKSYSCLS_TASK]] and [[CLS_MEASUREMENTTASKSYSCLS_MEASUREMENTTASK]] classification.
=== Assign a Value Validation object ===