What is the latest version of auth.055?

The latest version in the ISO 20022 e-Repository release of 24 April 2025 is auth.055.001.01.

What is the root element of auth.055?

The XML document is Document with the namespace urn:iso:std:iso:20022:tech:xsd:auth.055.001.01, and its message element is CCPMmbRqrmntsRpt (CCPMemberRequirementsReport).

Is there an MT equivalent of auth.055?

No Swift MT message is listed as its direct equivalent on this site. Many ISO 20022 messages have no MT counterpart.

auth: Authorities

auth.055 CCP Member Requirements Report

Written and maintained by ZagTrader. Last reviewed 21 October 2026. How this page is sourced and checked

auth.055 is the ISO 20022 CCPMemberRequirementsReport message in the Authorities business area (auth). The latest version is auth.055.001.01.

Message: CCPMemberRequirementsReport
Latest version: auth.055.001.01
Submitting organisation: Bank of England
MT equivalent: None listed

In use: published in the current ISO 20022 catalogue.

What auth.055 is for

The CCPMemberRequirementsReport message is sent from the central counterparty to the national competent authority. It is used to inform the national competent authority about the collateral requirements that a central counterparty obligates a clearing member post at the central counterparty.

Definition from the ISO 20022 e-Repository, release of 24 April 2025.

auth.055 versions

Every version published in the e-Repository, newest first. A message keeps its business purpose across versions; each new version is a separate schema with its own namespace.

Version	Registration status	Published in
auth.055.001.01latest	Registered	Latest version set

auth.055 message structure

The building blocks of auth.055.001.01 to three levels, with multiplicity ([0..1] optional, [1..1] mandatory, * any number) and the data type or component. Element names and definitions are from the ISO 20022 repository; usage guidelines such as CBPR+ or a market infrastructure's rules can restrict them further.

Document [1..1]
- CCPMmbRqrmntsRpt CCPMemberRequirementsReport [1..1]
  - IntraDayRqrmntAmt Intra Day Requirement Amount [1..*]IntraDayRequirement1
    Obligations of a clearing member with respect to a central counterparty that are calculated based on intraday positions.
    - IntraDayMrgnCall Intra Day Margin Call [1..1]ActiveCurrencyAndAmount
      Total aggregate value of collateral called intraday, excluding repayments.
    - PeakInitlMrgnLblty Peak Initial Margin Liability [1..1]ActiveCurrencyAndAmount
      Peak increase in initial margin liability for the account during the day.
    - PeakVartnMrgnLblty Peak Variation Margin Liability [1..1]ActiveCurrencyAndAmount
      Peak loss uncollateralised variation margin liability on the margin account during the day.
    - AggtPeakLblty Aggregate Peak Liability [1..1]ActiveCurrencyAndAmount
      Peak intraday liability (sum of increase in initial margin relative to end of day plus sum of decrease in variation margin relative to end of day)...
    - MrgnAcctId Margin Account Identification [1..1]GenericIdentification165
      Identification of the account used to calculate margin requirements and determine intraday calls.
      - Id Identification [1..1]Max256Text
      - Desc Description [0..1]Max140Text
      - Issr Issuer [0..1]Max35Text
      - SchmeNm Scheme Name [0..1]SchemeIdentificationType1Code
  - IntraDayMrgnCall Intra Day Margin Call [0..*]IntraDayMarginCall1
    Describes an instance of an intraday margin call being made against a margin account.
    - MrgnAcctId Margin Account Identification [1..1]GenericIdentification165
      Identification of the margin account against which the intraday margin call is being made.
      - Id Identification [1..1]Max256Text
      - Desc Description [0..1]Max140Text
      - Issr Issuer [0..1]Max35Text
      - SchmeNm Scheme Name [0..1]SchemeIdentificationType1Code
    - IntraDayCall Intra Day Call [1..1]ActiveCurrencyAndAmount
      Value of the call being made.
    - TmStmp Time Stamp [1..1]ISODateTime
      Time at which the margin call was made.
  - EndOfDayRqrmnt End Of Day Requirement [1..*]EndOfDayRequirement2
    Obligations of a clearing member with respect to a central counterparty that are calculated based on end of day positions.
    - InitlMrgnRqrmnts Initial Margin Requirements [1..1]InitialMarginRequirement1
      Liability and assets that arise for a clearing member with respect to a central counterparty.
      - InitlMrgnXpsr Initial Margin Exposure [1..*]InitialMarginExposure1
      - Cdt Credit [1..1]ActiveCurrencyAndAmount
    - VartnMrgnRqrmnts Variation Margin Requirements [1..1]AmountAndDirection102
      Total change in the mark-to-market value of the margin account from the previous day, net of changes in mark-to-market relating to the entry or exit...
      - Amt Amount [1..1]ActiveCurrencyAndAmount
      - Sgn Sign [1..1]PlusOrMinusIndicator
    - MrgnAcctId Margin Account Identification [1..1]GenericIdentification165
      Identification of account used to calculate margin requirements.
      - Id Identification [1..1]Max256Text
      - Desc Description [0..1]Max140Text
      - Issr Issuer [0..1]Max35Text
      - SchmeNm Scheme Name [0..1]SchemeIdentificationType1Code
  - DfltFndRqrmnt Default Fund Requirement [1..*]DefaultFundRequirement1
    Requirement for a clearing member to post collateral at a central counterparty with respect to a default fund.
    - ClrMmbId Clearing Member Identification [1..1]GenericIdentification165
      Identification of the clearing member.
      - Id Identification [1..1]Max256Text
      - Desc Description [0..1]Max140Text
      - Issr Issuer [0..1]Max35Text
      - SchmeNm Scheme Name [0..1]SchemeIdentificationType1Code
    - SvcId Service Identification [0..1]Max35Text
      Central counterparty's identification of the service where default fund contributions are made at the service level.
    - Amt Amount [1..1]ActiveCurrencyAndAmount
      Clearing member's pre-funded default fund requirement for the default fund at the central counterparty.
  - SplmtryData Supplementary Data [0..*]SupplementaryData1
    Additional information that cannot be captured in the structured elements and/or any other specific block.
    - PlcAndNm Place And Name [0..1]Max350Text
      Unambiguous reference to the location where the supplementary data must be inserted in the message instance.
    - Envlp Envelope [1..1]SupplementaryDataEnvelope1
      Technical element wrapping the supplementary data.

Have a auth.055 message? Paste it into the parser to see every element with its name and definition, and format checks on BICs, IBANs, dates and amounts.

auth.055 questions

What is the latest version of auth.055?: The latest version in the ISO 20022 e-Repository release of 24 April 2025 is auth.055.001.01.
What is the root element of auth.055?: The XML document is Document with the namespace urn:iso:std:iso:20022:tech:xsd:auth.055.001.01, and its message element is CCPMmbRqrmntsRpt (CCPMemberRequirementsReport).
Is there an MT equivalent of auth.055?: No Swift MT message is listed as its direct equivalent on this site. Many ISO 20022 messages have no MT counterpart.

All ISO 20022 messages · ISO 20022 code sets · MT messages

The ISO 20022 message definitions, element names and definitions on this page are reproduced from material published at iso20022.org under the ISO 20022 Intellectual Property Rights policy. This is not the official source: the up-to-date ISO 20022 standards and repository material are published only at iso20022.org. Explanations in our own words are by ZagTrader. ZagTrader is not affiliated with or endorsed by ISO or Swift.