Introduction:
ServiceNow Decision Tables are an invaluable feature that streamlines complex decision-making processes based on multiple factors. Whether you're automating incident categorization, change management approvals, or asset assignments, Decision Tables provide a structured and efficient way to determine outcomes. In this comprehensive guide, I will explore the components of Decision Tables, real-world use cases, best practices, and practical steps to create Decision Tables in ServiceNow.
For any sort of mapping no more custom tables are needed.
Understanding ServiceNow Decision Tables
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Overview:
- Decision Tables are a powerful tool for resolving complex decisions that depend on multiple factors.
- Each factor is treated as a decision input, creating a structured and organized format for decision-making.
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Components of Decision Tables:
- Decision Table records represent a single decision, specifying the table used for answers.
- Decision input records represent the inputs used to obtain answers, supporting various types like strings, references, true/false, and dates.
- Decision records represent individual decisions based on inputs, with conditions created using the condition builder.
- Answer records represent outcomes reached using different decision input values, chosen from the specified table.
Creating a Decision Table in ServiceNow
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Before You Begin:
- Role required: decision_table_admin.
- Selection or creation of a table for decision answer records.
- Ensuring a display value field is set on the table used for decision records.
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Procedure:
- Create or select a table for decision answer records.
- Create records on this table for each answer in your decision.
- Create a decision table record, specifying the answer table and other relevant details.
- Create decision input records, defining the inputs used for the decision.
- Create decision records, associating decisions with conditions, answers, and default options.
I have created an example of Location and Location Size Based Routing.
Sub flow to get the decision answer
DecisionTableAPI - Scoped, Global
Use the DecisionTableAPI class to access Decision Tables data in scoped and global server-side scripts.
To access DecisionTableAPI methods, use the
sn_dt namespace. You must have the decision_table_crud_api role to use this API.
ServiceNow Docs: Create a decision table to resolve complex decisions (servicenow.com)
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