Model-Based Definition > Geometric Dimensioning and Tolerancing Advisor > Advisor Message Help > Part Messages > There Are Failed Objects in the Model
  
There Are Failed Objects in the Model
This message indicates that there are problems with one or more objects such that they cannot be accurately evaluated. The following conditions cause evaluation problems:
• A feature with a Geometry references are not valid message.
• A datum derived from targets with one of the following messages:
◦ Target reference is missing.
◦ Datum object is missing.
• A DRF with one of the following messages:
◦ The DRF is invalid.
◦ Orientation of the secondary datum is not allowed.
◦ Orientation of the tertiary datum is not allowed.
• A geometric tolerance with one of the following messages:
◦ GCS is not valid for the feature/DRF combination
◦ Geometric tolerance has syntax errors
◦ Datum reference string has syntax errors
• A dimension with a Dimension reference feature is not valid message.
Along with the specific advisor message, failed objects are indicated with a double dagger symbol (‡) in the Feature Tree. You should always immediately attempt to fix failed objects by following the instructions specified on the specific advisor message help page.
In addition, all the objects that are dependent on a failed object are marked with a dagger symbol (†). These marked objects may or may not have advisor messages associated with them. However, since they are dependent on failed objects their advisor messages may not be accurate. You should always attempt to address the problems associated with the failed objects (marked with ‡) first.