Introduction
ServiceNow is a powerful cloud platform designed for IT service management and business workflows. A basic training in ServiceNow often makes beginners to feel confident in using this platform. Real project work then exposes gaps in understanding. Small mistakes create performance issues and data problems. These issues reduce user trust. ServiceNow Classeshelp beginners understand core platform concepts and real project workflows. This article explains common ServiceNow mistakes beginners make. Keep reading this section to know more.
Common ServiceNow Mistakes Beginners Make
Below are some common mistakes beginners make when starting with ServiceNow.
1. Poor Understanding of Tables and Relationships
Beginners often create new tables before checking the existing ones which increases data duplication. ServiceNow already provides extended tables. Task is the base table for many processes. Incident and Change extend Task. Beginners sometimes ignore table inheritance. This mistake breaks reporting and security.
Correct design uses extension instead of duplication. A custom table should extend Task when workflow behavior is needed. You can verify extension using dictionary entries. Use the following syntax in background scripts to inspect a table.
This approach keeps data consistent and reduces maintenance effort.
2. Writing Inefficient GlideRecord Queries
GlideRecord misuse is a common beginner issue. Beginners often query large tables without filters. This causes slow forms and slow lists. Performance degrades quickly in production.
Always add encoded queries or indexed fields. Always limit results when possible. Use setLimit for safety. Avoid querying inside loops.
This code runs faster and uses fewer resources. Performance discipline matters in ServiceNow. One can join Servicenow Training In Hyderabad for the best hands-on experience in using the platform.
3. Misusing Business Rules
Beginners often place all logic inside Business Rules. Choosing the wrong timing is a common mistake. Using before rules for update logic causes issues. Forgetting order values can lead to errors.This leads to unexpected behavior.
Before rules validate data before saving. After rules execute actions that depend on stored data. Use async rules for logic that is heavy or time-consuming.
This logic fits a before update rule. Clear separation improves stability.
4. Hardcoding Values in Scripts
Hardcoded sys_ids are a major mistake. These values change across instances. Migration breaks scripts. Debugging becomes difficult.
Always use system properties or dynamic lookups. Use gs.getProperty for reusable values.
This method supports safe deployment across environments.
5. Ignoring Access Control Rules
Beginners test with admin roles. They forget real users. Features then fail after go live. Access Control Lists control security at table and field level.
Always test with non admin users. Create proper read and write ACLs.
This simple check prevents unauthorized access and protects data.
6. Poor Update Set Management
Update Sets confuse beginners. They forget to capture changes. They mix multiple features in one set. Rollback becomes impossible.
Use one update set per feature. Review captured changes. Never move data records with update sets. Follow clean promotion practices.
7. Client Script Overuse
Beginners put heavy logic in client scripts. Browsers then slow down. Forms become unstable. Client scripts should stay light.
Move complex logic to Script Includes. Call them using GlideAjax.
This design improves performance and reuse.
Conclusion
ServiceNow beginners often make mistakes due to speed and confidence. These mistakes affect performance and security. Poor table design causes data issues. Inefficient GlideRecord usage slows systems. Wrong Business Rule logic creates bugs. Hardcoded values break deployments. Missing ACL checks expose data. Bad update set habits risk production stability. Heavy client scripts hurt user experience. Awareness solves most problems. The ServiceNow Admin Course is designed for beginners to provide the best industry-relevant training in this field. Maintaining a clean design and platform standards helps one build reliable systems using ServiceNow.
