| UnknownRegionTableType | error | |
| The specified table is not a CXC region
table. | ||
| ColumnNotFound/UnknownCoordinateAxes | error | |
| There is an inconsistency
in the region table: The value of the MFORM attribute is syntactically
incoorect or points to a non-existing column. | ||
| MandatoryColumnsMissing/MissingData | error | |
| Specified table is not
CXC-compliant. | ||
| UnknownShape | error | |
| An unknown region shape was encountered. | ||
| In addition dal errors can occur in conjunction with the reading of the data set (e.g. access problems). | ||