Update status descriptions

Author: mnd999

modules/ROOT/pages/errors/gql-errors/22NC1.adoc

@@ -1,7 +1,7 @@
 = 22NC1
 
 == Status description
-The graph type element includes a property key with name `{ <<propKey>> }` more than once.
+error: data exception - graph type element contains duplicated tokens. The graph type element includes a property key with name `{ <<propKey>> }` more than once.
 
 == Explanation
 When defining a graph type, node element types, and relationship element types may only define a property once.

modules/ROOT/pages/errors/gql-errors/22NC2.adoc

@@ -1,7 +1,7 @@
 = 22NC2
 
 == Status description
-The node element type `{ <<label>> }` must contain one or more implied labels, or define at least one property type.
+error: data exception - node element type is empty. The node element type `{ <<label>> }` must contain one or more implied labels, or define at least one property type.
 
 == Explanation
 When defining a graph type, node element types have some effect.

modules/ROOT/pages/errors/gql-errors/22NC3.adoc

@@ -1,7 +1,7 @@
 = 22NC3
 
 == Status description
-The relationship element type `{ <<relType>> }` must define a node element type for source or destination, or define at least one property type.
+error: data exception - relationship element type is empty. The relationship element type `{ <<relType>> }` must define a node element type for source or destination, or define at least one property type.
 
 == Explanation
 When defining a graph type, relationship element types must have some effect.

modules/ROOT/pages/errors/gql-errors/22NC4.adoc

@@ -1,7 +1,7 @@
 = 22NC4
 
 == Status description
-The label(s) `{ <<labelList>> }` are defined as both identifying and implied.
+error: data exception - a label cannot both identifying and implied. The label(s) `{ <<labelList>> }` are defined as both identifying and implied.
 
 == Explanation
 When defining a graph type, labels and relationships must be assigned clear roles.

modules/ROOT/pages/errors/gql-errors/22NC5.adoc

@@ -1,7 +1,7 @@
 = 22NC5
 
 == Status description
-The `{ <<entityType>> }` element type referenced by `{ <<graphTypeReference>> }` was not found.
+error: data exception - graph type element not found. The `{ <<entityType>> }` element type referenced by `{ <<graphTypeReference>> }` was not found.
 
 == Explanation
 This error occurs when a graph type definition references an element type (such as a node or relationship) using an alias that has not been defined, or by an identifying reference where there is no graph type element identified by that reference.
@@ -25,7 +25,14 @@ An error will be thrown with GQLSTATUS 22NC5 and the status description:
 ----
 error: data exception - graph type element not found. The node type element referenced by '(:Node =>)' was not found.
 ----
-In this case, the reference could be corrected to be non-identifying, or the node type element could be defined before this operation.
+In this case, the reference could be corrected to be non-identifying, or the node type element could be defined before this operation:
+
+[source,cypher]
+----
+ALTER CURRENT GRAPH TYPE SET {
+  (:Node)-[e:REL => { prop :: STRING }]->()
+}
+----
 
 === Relationship element reference not found ===
 For example, try to set a graph type with a relationship element reference that does not exist:
@@ -43,6 +50,15 @@ An error will be thrown with GQLSTATUS 22NC5 and the status description:
 [source]
 ----
 error: data exception - graph type element not found. The relationship type element referenced by 'b' was not found.
+----
+In this case, the reference could be corrected by providing a relationship type:
+
+[source,cypher]
+----
+ALTER CURRENT GRAPH TYPE SET {
+  CONSTRAINT FOR ()-[b:REL]->() REQUIRE (b.prop) IS KEY
+}
+
 ----
 
 ifndef::backend-pdf[]

modules/ROOT/pages/errors/gql-errors/22NC8.adoc

@@ -1,7 +1,7 @@
 = 22NC8
 
 == Status description
-The empty node type `()` is not a valid target for a constraint
+error: data exception - constraint does not have a label or relationship type. The empty node type `()` is not a valid target for a constraint
 
 == Explanation
 This error occurs when you attempt to define a constraint on an empty node type.

modules/ROOT/pages/errors/gql-errors/22NC9.adoc

@@ -1,7 +1,7 @@
 = 22NC9
 
 == Status description
-The graph type includes a label, relationship type or alias with name `{ <<token>> }` more than once
+error: data exception - graph type contains duplicated tokens. The graph type includes a label, relationship type or alias with name `{ <<token>> }` more than once
 
 == Explanation
 This error occurs when a graph type definition attempts to use the same name for more than one label, relationship type, or alias within the same scope.

modules/ROOT/pages/errors/gql-errors/22NCA.adoc

@@ -1,7 +1,7 @@
 = 22NCA
 
 == Status description
-A `{ <<entityType>> }` element type property `{ <<context>> }` constraint cannot be specified inline of a `{ <<entityType2>> }` element type
+error: data exception - invalid element type constraints in graph type. A `{ <<entityType>> }` element type property `{ <<context>> }` constraint cannot be specified inline of a `{ <<entityType2>> }` element type
 
 == Explanation
 Property type and existance constrains cannot be defined as inline constraints on graph type elements.