You are in the right place if a bank is asking for a sender letter. The issue is usually not whether the payment was sent. The bank is waiting for a document, purpose, declaration, or trade explanation before it releases the funds.
A document hold is rarely about producing more paper for its own sake. The bank is trying to connect the payment to a clear commercial event: who paid, who receives, what goods or services are involved, and why the amount makes sense. For this case, gather sender identity, beneficiary identity, amount, currency, purpose, invoice, and relationship context. That gives the bank a clean release pack and gives treasury enough context to challenge a vague or repeated document request.
The bank is usually trying to connect the payment to the underlying trade: invoice, purpose, sender, beneficiary, goods or services, and amount. In this case, the immediate issue is that a bank is asking for a sender letter.
Send a clean pack: sender identity, beneficiary identity, amount, currency, purpose, invoice, and relationship context. The details should match the beneficiary, invoice, payment reference, currency, amount, and commercial purpose.
It is still a normal release issue while the bank is asking for a specific document and confirming the review path. It becomes escalation when the request is unclear, repeated after documents were supplied, or no bank will own the release status.
Do not send a replacement payment just to reduce pressure. Contact Unicorn with the document request, payment proof, invoice, beneficiary details, and timeline so treasury can help shape the response and escalation path.
A bank is asking for a sender letter usually means the bank needs to connect the payment to a real commercial transaction before funds are released. Start by matching the payment to the invoice, purpose, sender, beneficiary, amount, currency, and trade context, then respond with one clean document pack instead of disconnected attachments.
A sender letter should identify the sender, beneficiary, payment amount, currency, date, purpose, invoice or contract reference, and transaction reference. It should explain the commercial reason for the payment in language that matches the supporting documents.