AcctLkMntncReq
Mandatory
MsgHdr
Optional
AcctLkId
Mandatory
SctiesAcct
Optional
BlckChainAdrOrWllt
Optional
CshAcct
Mandatory
Valid From
VldFr
Mandatory
Definition: Defines the date since when the securities account is linked to the cash account. Header (last message set approved on 19 February 2026).
Type: DateAndDateTime2Choice
Dt
Choice
DtTm
Choice
Upd
Mandatory
SplmtryData
Repetition (0..n)