| A | |
| At [Pxp_core_types.S] | 
The string is a description where the exn happened.
 | 
| C | |
| Character_not_supported [Pxp_core_types.S] | |
| E | |
| Error [Pxp_core_types.S] | 
Other error
 | 
| I | |
| ID_not_unique [Pxp_tree_parser] | 
Used inside  Pxp_tree_parser.indexto indicate that the same ID is
      attached to several nodes | 
| M | |
| Method_not_applicable [Pxp_core_types.S] | 
Indicates that a method has been called that is not applicable for
 the class.
 | 
| N | |
| Namespace_error [Pxp_core_types.S] | 
Violation of a namespace constraint
 | 
| Namespace_method_not_applicable [Pxp_core_types.S] | 
Indicates that the called method is a namespace method but that the
 object does not support namespaces.
 | 
| Namespace_not_in_scope [Pxp_core_types.S] | 
The namespace scope does not know the URI
 | 
| Namespace_not_managed [Pxp_core_types.S] | 
A namespace URI is used but not declared in the namespace manager.
 | 
| Namespace_prefix_not_managed [Pxp_core_types.S] | 
A namespace prefix is used but not declared in the namespace manager.
 | 
| Not_competent [Pxp_core_types.S] | 
The resolver cannot open this kind of entity ID
 | 
| Not_resolvable [Pxp_core_types.S] | 
While opening the entity, the nested exception occurred
 | 
| U | |
| Undeclared [Pxp_core_types.S] | 
Indicates that no declaration is available and because of this every kind
 of usage is allowed.
 | 
| V | |
| Validation_error [Pxp_core_types.S] | 
Violation of a validity constraint
 | 
| W | |
| WF_error [Pxp_core_types.S] | 
Violation of a well-formedness constraint
 | 
