How to say “Politely acknowledge busyness” professionally

Level 1: Thank you for considering me for this. My current focus is on [Project A] and [Project B], both of which are currently in critical phases. I'd be happy to review this new request once those are stable, or if priorities can be re-evaluated.

Level 2: I appreciate you bringing this to my attention. Given the current commitments on [Key Initiative], my capacity is somewhat constrained. Could we perhaps explore how this new request aligns with our broader strategic objectives and adjust accordingly?

Level 3: Understood. My current sprint capacity, as outlined in the Jira board and last week's planning session, is fully allocated to projects already approved in the Q3 roadmap. Should you wish to re-prioritize, please submit a formal change request to ensure proper resource accounting and stakeholder alignment.

Level 4: My current workload is at capacity with existing high-priority deliverables. Adding this new task without adjusting current commitments will inevitably impact quality and deadlines on other projects. Please advise on which existing task I should deprioritize.

Level 5: Not my problem.

Level 1: Thank you for sharing this request. We are currently fully engaged with the established deliverables for [Project Name]. We will assess how this new request aligns with our current project scope and timeline and provide an updated plan shortly.

Level 2: We appreciate your enthusiasm for this new direction. Our current project plan for [Current Phase] is quite robust, and our team is fully dedicated to meeting those specific milestones. Let's schedule a brief call to discuss how this new request might integrate, considering our existing commitments.

Level 3: Noted. As per the signed Statement of Work (SOW) and the mutually agreed-upon project plan, our current resources are allocated to the deliverables outlined in Appendix A. Any deviation or addition would require a formal change request, leading to a revised timeline and potential scope adjustment, as per Clause 7.2.

Level 4: Our current resources are fully committed to delivering the agreed-upon project scope within the established timeline. Introducing this new request now will necessitate a re-evaluation of current priorities and will directly impact the delivery schedule or budget. Which would you prefer to adjust?

Level 5: Read the contract.

Level 1: I appreciate you thinking of me for this. Currently, I'm deep into [my current project] with a tight deadline. Perhaps [another colleague] might have the capacity to assist, or we can revisit this later in the week?

Level 2: Thanks for reaching out. My bandwidth is quite constrained with existing priorities for [Project X] and [Project Y] at the moment. Could you outline the urgency and impact of this task so I can gauge if there's any flexibility, or if it might be better suited for someone else?

Level 3: I'd love to help, but my calendar, which is publicly visible, clearly indicates my schedule is fully booked with deliverables pre-approved in the team's sprint planning. Unless this has been formally prioritized above [my existing tasks], my focus must remain on my committed scope of work.

Level 4: I am unable to take on additional tasks right now. My current commitments require my full attention. If this is critical for your work, please discuss it with [Team Lead/Manager] for proper allocation.

Level 5: Figure it out.