Category 5: Securities markets
MT581 Collateral Adjustment Message
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The MT581 is exchanged between two financial institutions in a collateralised securities transaction, typically a securities loan. It claims or notifies an increase or decrease of the collateral amount because the value of the existing collateral has moved relative to the securities on loan.
- Message type
- MT581
- Category
- 5
- Status
- In the current standard
- ISO 20022
- No direct equivalent
What MT581 is used for
It belongs with the securities lending messages MT516 and MT526 and uses the same older layout without 16R blocks: nine fields, of which the references, the further identification, the adjustment amount and the reason are mandatory. The collateral itself moves with settlement instructions or a payment; the MT581 only states the adjustment.
- Sent by
- A lender, borrower or their agent
- Sent to
- The other party to the collateralised transaction
MT581 format: sequences and fields
Message fieldsMandatory
The MT581 has no sequences: the fields follow one another in this order.
| Tag | Name | Status | Format | Meaning |
|---|---|---|---|---|
| 20 | Transaction Reference Number | M | 16x | The sender’s own reference for this adjustment message. |
| 21 | Related Reference | M | 16x | The reference of the loan or earlier message that this adjustment relates to. |
| 23 | Further Identification | M | 16x | Further identifies the purpose of the message, using the identification set out in the standard. |
| 30 | Date of Adjustment | O | 6!n | The date of the collateral adjustment, as YYMMDD. |
| 35H | Adjustment to the Collateral | M | [N]3!a15d | Currency and amount of the adjustment to the collateral; a leading N marks a negative amount. |
| 35B | Identification of Securities Used as Collateral | O | [ISIN1!e12!c] [4*35x] | The securities given as collateral: ISIN and, optionally, a description. |
| 80C | Reason for Collateral Adjustment | M | 6*35x | Free text explaining why the collateral has to be adjusted. |
| 34B | Outstanding Collateral Value | O | 3!a15d | Currency and amount of the collateral value outstanding. |
| 72 | Sender to Receiver Information | O | 6*35x | Additional instructions or information for the receiver, in free text. |
Format notation: n digits, a upper-case letters, c upper-case letters and digits, x any character of the Swift character set, d a decimal number with a comma, ! fixed length, [ ] optional, 4*35x up to 4 lines of 35 characters. M mandatory, O optional, C conditional (a rule decides).
ISO 20022
Swift’s MT and MX equivalence tables list no ISO 20022 equivalent for the MT581.
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