How can I avoid the error oracle.jbo.script.ExprResourceException: JBO-25171?

See these common causes of and best practices for avoiding the oracle.jbo.script.ExprResourceException: JBO-25171 error:

Common Causes of oracle.jbo.script.ExprResourceException: JBO-25171

• Null values not handled properly in Groovy scripts
• Invalid or missing field references, especially custom fields.
• Incorrect object relationships or API names.
• Scripts referencing fields too early (for example, before insert).
• Dynamic layout expressions with incorrect logic.

Best Practices to Avoid oracle.jbo.script.ExprResourceException: JBO-25171

• Wrap expressions with null checks.
• Double-check field names and API names in Application Composer.
• Use println debugging in Groovy scripts.
• For UI expressions, test them in Page Composer's Expression Tester.