How to say “Politely admit not knowing” professionally

Level 1: Thank you for bringing this to my attention. While this specific area isn't within my primary focus or expertise, I'd be happy to help identify the right resource or point you towards relevant documentation if I can.

Level 2: I appreciate you thinking of me for this. My current understanding of this particular subject is limited, but I can look into who on the team might have the most relevant background or suggest a starting point for inquiry.

Level 3: Per the documented `RACI chart` and my established `OKR`s, this specific domain falls outside my assigned responsibilities. Perhaps we can consult the `project brief` or the latest `sprint planning notes` to confirm the designated owner for this deliverable.

Level 4: I don't have the necessary information or expertise to address this effectively at this time. To ensure this is handled correctly, we need to either re-evaluate the task's placement within our team structure or allocate appropriate resources for training.

Level 5: Figure it out yourself.

Level 1: Thank you for this question. That specific detail falls outside the immediate scope of our current engagement/our team's direct expertise. We'll need to consult with [Relevant Department/Subject Matter Expert] to provide an accurate and comprehensive response.

Level 2: I appreciate you raising that point. While I don't have that specific information readily available, I will connect with our internal team to get you the most precise answer. Please expect an update within [timeframe].

Level 3: As outlined in the `Statement of Work` v3.1, this particular inquiry falls beyond the defined `deliverables` for this phase. To address this, we would need to initiate a `change request` and re-evaluate the project `milestones`.

Level 4: I do not have that information, and it is not within the defined parameters of our current project agreement. If this is a new requirement, we need to discuss a formal scope adjustment and its associated implications.

Level 5: Read the contract.

Level 1: That's an interesting question. I'm not familiar with that particular process or tool, but I can certainly point you towards the team's shared knowledge base or suggest who might be the best person to ask.

Level 2: I appreciate you reaching out. While that's not an area I've personally delved into, I'd recommend checking the project documentation or reaching out to [Specific Team Member] who has more direct experience with this.

Level 3: Referring to the `onboarding documentation` and our `team's established best practices`, this falls under [Specific Team Member]'s designated expertise. Perhaps reviewing the `wiki page` or their `Confluence updates` would provide the necessary context.

Level 4: I don't have that information. My focus is on [Your Area of Focus]. For questions related to [Their Area of Question], you'll need to consult the relevant documentation or the person responsible for that module.

Level 5: Google it.