| ERROR | : NULL index table key value |
| CAUSE | An attempt was made to index into an index table with a NULL key value. |
| ACTION | Make sure key values used to index into index tables are non-NULL. |
| ERROR | : NULL index table key value |
| CAUSE | An attempt was made to index into an index table with a NULL key value. |
| ACTION | Make sure key values used to index into index tables are non-NULL. |