Separate urgency from substitution permission
An urgent request still needs a clear identity and acceptance boundary. Supply the exact reference and explain which differences are unacceptable. If engineering review is possible, state what evidence is needed to consider an alternative.
Request preparation checklist
| Area | Include or confirm |
|---|---|
| Exact requirement | Complete manufacturer reference, platform part number, revision, firmware and included parts. |
| Condition | State whether new, new old stock, used or refurbished is permitted; request the relevant evidence. |
| Timing | Required quantity and delivery window, whether partial delivery helps and how long a proposed option can be reviewed. |
| Decision record | Keep the original requirement, proposed difference and buyer approval separate. |
Review and acceptance boundary
EOL information and a current supply claim answer different questions. Do not infer current stock from an old catalog, or treat a seller photograph as proof of authenticity or a complete condition history. Exact-part submission is currently unavailable.