Validation errors

Several types of errors are displayed for missing or incorrect information in the nodes and paths while saving an element or activating a decision tree.

Question node errors

Tableau 1. Resolving errors in question nodes

Error message	Resolution
This node needs a unique name	Enter a name in the Node name field.
The questions in this node need to be unique	Enter a unique question or instruction in the Question or instruction field.
This node needs a question to ask users	Enter a unique question or instruction in the Question or instruction field.
The task input needs a reference table to pass data about records	Select a table in the Reference table field for the task input to pass data about the record on which this decision tree is run.
Question {number} needs a question or instruction	Enter a question or instruction in the Question or instruction field.
Question {number} needs an answer type	Select an input type for the expected answer in the Type of answer field.
Question {number} needs answer choices	The Choice answer type requires a choice list. Enter values in the Label and Value fields to configure a list. You can add as many choices as you want.
Question {number} needs an answer-string character limit	Enter a character limit in the Maximum number of characters field.
Type of answer in Question {number} doesn't exist	The answer type that you entered in the Type of answer field isn’t valid. Select the answer type from the list. For more information, see Answer types for questions.
Question {number} needs a choice table and choice fields for the answer(s)	The Pre-defined list from a table option for the choice answer type requires you to specify the choice table and choice field to reuse choices. Select a table and list field in the Choice table and Choice field fields respectively.
Choice table in Question {number} doesn't exist	Enter a valid table name in the Choice table field.
Question {number} needs a reference table for the answer(s)	The reference input type requires a reference table to be selected. Select a table in the Reference table field to add a reference field, which stores a reference to a field on another table, as an answer type.
Reference table in Question {number} doesn't exist	Enter a valid table name in the Reference table field.
You need to add a path after this node	Question nodes require paths to add the next question or guidance nodes. Select the Add path icon on the question node in the canvas to add a new path.
The input you linked in Question {number} isn’t valid because of mismatched answer types. You can unlink this input, link a new one, or change this question’s answer type.	After you change a question’s answer type in a prior node, the input mapping from the question in the current node is no longer valid. Unlink the input by deleting the link. Either change this question's answer type to match the changed answer type in the prior node or add a question that matches it. Select the Link input icon () to link the inputs.
The input you linked to Question {number} no longer exists after recent node changes. Unlink this input to fix this error.	Unlink the input by deleting the link.
The input you linked in Question {number} isn't valid because of mismatched reference tables with a prior node. Tables need to match at the same or child level.	You can link reference input types only if the current question node’s input table matches the prior node’s input table at the same level or at the child level. For example, the Task table can be linked to the Task table or the Task table can be linked to the Case table, which is a child of the Task table. Unlink the input by deleting the link. If necessary, select the reference table that matches at the same level or at the child level. Select the Link input icon () to link the reference inputs again.

Guidance node errors

Tableau 2. Resolving errors in guidance nodes

Error message	Resolution
This node needs a unique name	Enter a name in the Node name field.
This node needs a guidance	Guidance nodes must be linked to a guidance. Either select an existing guidance or create one. Select an available guidance from the list in the Guidance field. Create a guidance in Core UI by selecting the Create a guidance icon in the Guidance field. For more information, see Create a guidance in the Core UI.
You need to set inputs for this guidance	Configure the guidance inputs for the guidance that you selected. For more information, see Provide actions to agents in a decision tree.
{Guidance input name} input isn't valid because of mismatched reference tables with a prior node. Tables need to match at the same or child level.	You can link reference input types only if the current guidance node’s input table matches the prior node’s input table at the same level or at the child level. For example, the Task table can be linked to the Task table or the Task table can be linked to the Case table, which is a child of the Task table. Unlink the input by deleting the link. Select the () icon to link the inputs again or enter a static value.
The input you linked to {Guidance input name} no longer exists after recent node changes. Unlink this input to fix this error.	Unlink the input by deleting the link. Select the Link input icon () to link the inputs again or enter a static value.
You need to reset the input(s) for this guidance because of changes in prior nodes	Unlink the input by deleting the link. If necessary, select the Link input icon () to link the new answer type from the prior node or enter a static value.

Linking node errors and warnings

Tableau 3. Resolving errors in linking nodes

Error message	Resolution
This node needs a unique name	Enter a name in the Node name field.
This node needs a child tree	Linking nodes must be linked to a child tree. Either select an activated decision tree or create one. Select an activated decision tree from the list in the Child decision tree field. Create a decision tree in Core UI by selecting the Create a decision tree icon in the Child decision tree field. For more information, see Create a decision tree in Core UI.
You need to map the inputs of the child decision tree to this decision tree correctly.	Configure the start node inputs of the child decision tree or select the Link input icon () to link the inputs.
{Input name} input isn't valid because of mismatched reference tables with a prior node. Tables need to match at the same or child level.	You can link reference input types only if the current guidance node’s input table matches the prior node’s input table at the same level or at the child level. For example, the Task table can be linked to the Task table or the Task table can be linked to the Case table, which is a child of the Task table. Unlink the input by deleting the link. Select the () icon to link the inputs again or enter a static value.

Tableau 4. Resolving warnings in linking nodes

Warning message	Resolution
The child decision tree you linked earlier changed. Double-check the mapped inputs.	Unlink the input by deleting the link. If necessary, select the Link input icon () to link the input from the prior node or enter a static value.
Make sure these linked decision trees can still use {child decision tree}: {Name of parent tree 1} {Name of parent tree 2} {Name of parent tree 3}	When you update and activate a decision tree, the parent decision trees that use this decision tree as a child tree must also be updated. Select the parent decision tree. Select the link node that references the child decision tree that has changed. Unlink the input by deleting the link. If necessary, select the Link input icon () to link the input from the prior node or enter a static value.

Path errors

Tableau 5. Resolving errors in paths

Error message	Resolution
This path needs a name	Enter a name in the Path name field.
This path needs a unique path priority	Enter a unique value in the Path priority field.
This path needs conditions for showing the next node	Configure one or more conditions by selecting an input from the previous node, an operator, and an input value.
Every condition in this path needs to be complete	Complete a condition in the path by selecting an input from the previous node, an operator, and an input value.
You need to add a node after this path	A path must lead to a node. Select Add node to configure the placeholder node as a question node or a guidance node.
The path condition needs new values because of changes in prior nodes	Reconfigure the path condition by selecting the new input from the previous node, an operator, and the new input value.
The path conditions can’t be defined until the prior node has a question and answer	Configure questions and answer types in the path's parent node.