ISO 20022 · External code set

Reservation type codes

Specifies the type of reservation, as published in an external reservation type code set. External code sets can be downloaded from www.iso20022.org.

6 registered codesSource release: August 2026 (v3)
Registered codes in ExternalReservationType1Code. Select a code for its full definition and source details.
CodePublished name and definition
BLKDBlocked

Amount blocked or frozen due to external circumstances such as a court order, death of beneficiary or account owner, or bankruptcy.

CARECash Reservation

Amount set aside by a participant to reserve liquidity from its own account, exclusively or executing cash withdrawals.

HPARHighly Urgent Payment Reservation

Amount set aside by a participant to reserve liquidity from its own account, exclusively for executing highly urgent payments.

NSSRNet SSS Reservation

Amount set aside by a participant to reserve liquidity from its own account, exclusively for the settlement of the multilateral cash balance stemming from the Net Security Settlement System.

THREThreshold For Investment

Amount above which funds will be destined for investment.

UPARUrgent Payment Reservation

Amount set aside by a participant to reserve liquidity from its own account, exclusively for executing critical payments called urgent payments.

Message references 11

Versions listed in the source workbook, including older versions. This list does not establish which messages a bank, network or provider supports.

  • camt.103.001.03Create Reservation V03
  • camt.048.001.07Modify Reservation V07
  • camt.103.001.02Create Reservation V02
  • camt.046.001.06Get Reservation V06
  • camt.049.001.07Delete Reservation V07
  • camt.048.001.06Modify Reservation V06
  • camt.046.001.08Get Reservation V08
  • camt.047.001.07Return Reservation V07
  • camt.046.001.07Get Reservation V07
  • camt.047.001.08Return Reservation V08
  • camt.049.001.06Delete Reservation V06

Source: UsageInMsgs sheet in 2Q2026_externalcodesets_v3.xlsx.