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- Make sure Active is set to Yes and Visible is set to No for FLEX_FIELD_10. You can do this with any FlexField, but choosing FLEX_FIELD_10 might help strictly for organizational purposes as you introduce more visible FlexFields in future.
- Select String as Data Type.
- Provide Code and Display Name, you can use something like DEPLOY_VALIDATION and Deploy Validation for Deploy Request and similarly BUILD_VALIDATION and Build Validation for Build Request.
- Configure Validation Groovy Script as necessary. See some examples below in this document.
- Make sure to click Save.
- You can reuse one invisible FlexField for many different validations.
Here are some samples of Validation script:
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