Which of the following best describes the purpose of a shared private parameter?

• A. Keeps a common value across multiple transformers and prevents end-user changes
• B. Lets end users choose their own API keys
• C. Forces all parameters to be constant
• D. Exposes credentials on the interface

Answer: (A)

Having a shared private parameter means you store a value once and have multiple transformers reference that same value, while keeping it hidden from end users. This gives you a single source of truth for things like API keys or credentials, so every transformer uses the exact same value and you don’t risk drift from editing the value in multiple places. The private nature protects the value from being shown or modified in the end-user interface, which is important for security and integrity. In practice, you define the parameter once at the workspace level, then point all relevant transformers to it, ensuring consistency and easier maintenance.