How to say “Politically tell someone to mind their business” professionally

Level 1: I appreciate you thinking of me for this, but my current priorities are fully allocated to [Project A] and [Project B]. Could you advise on which of these I should de-prioritize to accommodate this new request?

Level 2: While I understand the urgency, this particular task appears to fall more within the purview of [Specific Team/Role]. My expertise is primarily focused on [Your Core Area], where I can deliver the most impact.

Level 3: Referring back to the Q3 OKRs and our team's established RACI matrix, this item isn't currently aligned with my assigned responsibilities. Perhaps we should revisit the resource allocation in our next sprint planning session?

Level 4: My current workload is at capacity, and taking on this additional item would directly compromise the delivery timeline for [Critical Project]. I need clear direction if this is to become my responsibility, along with a revised expectation for existing deliverables.

Level 5: Not my problem.

Level 1: Thank you for this suggestion. Our current Statement of Work (SOW) outlines specific deliverables, and this request appears to fall outside that initial scope. Could we schedule a brief call to discuss a potential scope adjustment?

Level 2: We appreciate your expanded vision for the project. To ensure we maintain the integrity of our current timelines and budget, any additional features or changes would require a formal change request, which we can initiate at your convenience.

Level 3: As per the mutually agreed-upon Project Plan (version 3.1, dated 2023-10-26), the current phase focuses on [specific deliverable]. This new request would necessitate a re-evaluation of our critical path and impact key milestones.

Level 4: This request is not covered by our existing contract and would incur additional costs and extend the project timeline. If you wish to proceed, we will need to formalize a change order and revise our agreement accordingly.

Level 5: Read the contract.

Level 1: Thanks for reaching out. My focus is currently on [My Project]. Have you already consulted with [Relevant Team/Person] on this, as it seems to align more closely with their expertise?

Level 2: I appreciate you bringing this to my attention, but my current bandwidth is fully allocated. For issues related to [Coworker's Topic], [Department X] typically handles those inquiries directly, or [Another Coworker] might have capacity.

Level 3: I recall the project kickoff meeting where we defined the swim lanes for this initiative. My understanding is that [Specific Area] falls under [Their Team's/Role's] purview. Perhaps reviewing the project charter would clarify the ownership?

Level 4: I need to be clear: this falls outside my direct responsibilities and current priorities. I won't be able to dedicate time to this, and I recommend you approach [Appropriate Person/Team] for assistance.

Level 5: Not my department.