Sentence examples similar to a policy needs to be defined from inspiring English sources

The phrase "a policy needs to be defined" is correct and usable in written English.
You can use it when discussing the necessity of establishing or clarifying a policy in a particular context, such as in business or governance.
Example: "Before we can proceed with the project, a policy needs to be defined to ensure everyone understands the guidelines."
Alternatives: "a policy must be established" or "a policy should be outlined."