Know the answer. Explain the payment.
Genuine questions a payments interviewer can reasonably ask, from foundations to senior-level exceptions. Every answer starts directly, adds operational context, and links back to the teaching or official evidence that supports it.
Shubham Mathure
Senior Business Analyst SME in payments technology, with expertise in SWIFT, ISO 20022, payment operations, and financial messaging. Creator of Payments Signal—making complex payment infrastructure clear and practical for everyone.
Interview-worthy coverage, without filler.
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Showing 151–200 · Page 4 of 8
Messages & MT ↔ MX migration
ISO 20022 & CBPR+
MEDIUMcamt.111In camt.111, what does Case/Id (Case identification) mean, and what can go wrong?
MODEL ANSWERDIRECT ANSWER
MANDATORY. Reference linking the response to the open case.
TRICKYpacs.002In pacs.002, what does GrpHdr/CreDtTm (Creation date and time) mean, and what can go wrong?
MODEL ANSWERDIRECT ANSWER
MANDATORY in Base ISO 20022 message definition.
WHY IT MATTERS
When this report was created. Several reports about the same payment can arrive as its status evolves — order matters. Pitfall: Processing status reports out of order can overwrite a final status with an earlier interim one.
MEDIUMpacs.002In pacs.002, what does GrpHdr/MsgId (Message identification) mean, and what can go wrong?
MODEL ANSWERDIRECT ANSWER
MANDATORY in Base ISO 20022 message definition.
WHY IT MATTERS
A unique reference for this status report itself, assigned by the agent sending it.
MEDIUMpacs.004In pacs.004, what does GrpHdr/CreDtTm (Creation date and time) mean, and what can go wrong?
MODEL ANSWERDIRECT ANSWER
MANDATORY in Base ISO 20022 message definition.
WHY IT MATTERS
When the return message was created.
MEDIUMpacs.004In pacs.004, what does GrpHdr/MsgId (Message identification) mean, and what can go wrong?
MODEL ANSWERDIRECT ANSWER
MANDATORY in Base ISO 20022 message definition.
WHY IT MATTERS
A unique reference for the return message itself — the return is a new settlement event with its own identity.
TRICKYpacs.007In pacs.007, what does GrpHdr/IntrBkSttlmDt (Interbank settlement date) mean, and what can go wrong?
MODEL ANSWERDIRECT ANSWER
CONDITIONAL. Date on which the reverse interbank movement is intended to settle.
MEDIUMpacs.007In pacs.007, what does GrpHdr/MsgId (Message identification) mean, and what can go wrong?
MODEL ANSWERDIRECT ANSWER
MANDATORY. Unique identifier for the reversal message.
MEDIUMpacs.008In pacs.008, what does GrpHdr/CreDtTm (Creation date and time) mean, and what can go wrong?
MODEL ANSWERDIRECT ANSWER
MANDATORY in Base ISO 20022 message definition.
WHY IT MATTERS
When this message was created — a timestamp for the message, distinct from the settlement date of the payment.
TRICKYpacs.008In pacs.008, what does GrpHdr/MsgId (Message identification) mean, and what can go wrong?
MODEL ANSWERDIRECT ANSWER
MANDATORY in Base ISO 20022 message definition.
WHY IT MATTERS
A unique reference for this message, assigned by the instructing agent. It changes at every hop; end-to-end references live at transaction level. Point-to-point duplicate detection keys on MsgId between adjacent agents. It is not the reference to quote to the customer. Pitfall: Confusing MsgId with EndToEndId in reconciliation logic breaks matching as soon as a payment crosses more than one hop.
MEDIUMpacs.009In pacs.009, what does GrpHdr/CreDtTm (Creation date and time) mean, and what can go wrong?
MODEL ANSWERDIRECT ANSWER
MANDATORY in Base ISO 20022 message definition.
WHY IT MATTERS
When this message was created.
MEDIUMpacs.009In pacs.009, what does GrpHdr/MsgId (Message identification) mean, and what can go wrong?
MODEL ANSWERDIRECT ANSWER
MANDATORY in Base ISO 20022 message definition.
WHY IT MATTERS
A unique reference for this message, assigned by the instructing agent for this hop.
MEDIUMpain.001In pain.001, what does GrpHdr/CreDtTm (Creation date and time) mean, and what can go wrong?
MODEL ANSWERDIRECT ANSWER
MANDATORY in Base ISO 20022 message definition.
WHY IT MATTERS
When the message was created. This is a timestamp for the instruction, separate from when the customer wants the payment executed. Useful in investigations to reconstruct the order of events when several versions of a file were exchanged.
TRICKYpain.001In pain.001, what does GrpHdr/MsgId (Message identification) mean, and what can go wrong?
MODEL ANSWERDIRECT ANSWER
MANDATORY in Base ISO 20022 message definition.
WHY IT MATTERS
A unique reference for this message, assigned by the initiating party. It identifies the file or message itself, not the individual payments inside it. Banks use MsgId as a first line of duplicate-file detection, so uniqueness matters across the sender's history, not just within a day. Pitfall: Reusing a MsgId — for example after a resend of a corrected file — is a common cause of duplicate rejections or, worse, silently ignored files.
TRICKYpain.002In pain.002, what does GrpHdr/CreDtTm (Creation date and time) mean, and what can go wrong?
MODEL ANSWERDIRECT ANSWER
MANDATORY in Base ISO 20022 message definition.
WHY IT MATTERS
When this status report was created. Ordering matters when several reports about the same file arrive. Pitfall: Processing status reports out of order can overwrite a final status with an earlier interim one.
MEDIUMpain.002In pain.002, what does GrpHdr/MsgId (Message identification) mean, and what can go wrong?
MODEL ANSWERDIRECT ANSWER
MANDATORY in Base ISO 20022 message definition.
WHY IT MATTERS
A unique reference for this status report itself, assigned by the bank sending it. Distinct from the original message's identification — a single pain.001 can generate several pain.002 messages over its life as statuses evolve.
EASYcamt.029What is camt.029, who sends it, and why is it used?
MODEL ANSWERDIRECT ANSWER
Answers an investigation case — most commonly a cancellation request sent as camt.056.
WHY IT MATTERS
It tells the requester what happened: the cancellation was accepted, it was rejected with a coded reason, or it is still pending. It closes (or updates) the case; if funds actually come back, they travel separately in a pacs.004. Like all camt investigation messages, it carries information, never money. Sent by the case assignee — the agent that was asked to cancel or investigate — back to the case creator or assigner that sent the request. the full camt.029 message definition covers more than cancellation answers, including modification and claim-related resolutions, compensation, and corrective transaction references.
EASYcamt.052What is camt.052, who sends it, and why is it used?
MODEL ANSWERDIRECT ANSWER
Reports balances and account entries during the day.
WHY IT MATTERS
It gives an account owner an interim cash position before the definitive statement is produced; delivery frequency, included balances, and whether empty reports are sent are service-agreement choices. Sent by an account servicing institution to the account owner or an authorised recipient, often several times during the business day. camt.052 can carry richer balance, entry, transaction, charge, party, and pagination detail; the applicable service and usage guideline decide which elements are populated.
EASYcamt.053What is camt.053, who sends it, and why is it used?
MODEL ANSWERDIRECT ANSWER
Provides the booked statement for an account, normally covering a completed reporting period with opening and closing balances plus the entries booked during that period.
WHY IT MATTERS
Sent by an account servicing institution to the account owner or an authorised recipient, commonly at end of day. The full statement supports balances, entries, transaction details, parties, charges, rates, remittance, pagination, and supplementary data; requirements depend on the service guideline.
EASYcamt.054What is camt.054, who sends it, and why is it used?
MODEL ANSWERDIRECT ANSWER
Notifies an account owner about one or more debit or credit entries, often promptly or with transaction-level detail for a bulk booking.
WHY IT MATTERS
It reports entries already booked or advised; it does not move value. Sent by an account servicing institution to the account owner or authorised recipient when the agreed notification trigger occurs. The message supports multiple notifications, entries, and detailed underlying transactions; the trigger, status usage, and level of detail are contracted service choices.
EASYcamt.055What is camt.055, who sends it, and why is it used?
MODEL ANSWERDIRECT ANSWER
It lets an initiating party ask its bank or forwarding agent to cancel a previously sent customer payment initiation such as pain.001.
WHY IT MATTERS
It is the customer-side request; if the payment has gone interbank, the bank may need to raise a separate camt.056 downstream. Sent by the initiating party or debtor to the party handling the original customer payment instruction, directly or through a forwarding agent. camt.055 can target original groups, payment-information blocks, or transactions and carries richer case and reason information; the current message definition and service rulebook control usage.
EASYcamt.056What is camt.056, who sends it, and why is it used?
MODEL ANSWERDIRECT ANSWER
Asks the receiving agent to cancel a previously sent interbank payment — or, if it already settled, to send the funds back.
WHY IT MATTERS
It opens a case: the sender identifies the original payment, gives a coded reason, and waits for an answer. It is a request, not an instruction. No money moves, nothing is guaranteed, and the answer can be no. Sent by the case assigner — typically the debtor agent that wants its payment back — to the case assignee, the next agent in the original payment's chain, and relayed hop by hop or through a clearing mechanism until it reaches the agent holding the funds. the full camt.056 message definition contains more elements, including case blocks, control data, and the full original transaction reference.
EASYcamt.110What is camt.110, who sends it, and why is it used?
MODEL ANSWERDIRECT ANSWER
Opens a structured payment investigation through Swift Case Management, replacing recurring MT195/199-style queries with a message that carries case, original-payment, request, and routing data in labelled elements.
WHY IT MATTERS
Sent through the Case Orchestrator by the institution opening or forwarding an investigation to the institution expected to answer. The ISO message and Swift usage guideline contain more orchestration, party, status, and underlying-payment structure; validate exact paths against the version in force.
SWIFT & MT
TRICKYMT101In MT101, what does :20: (Sender's Reference (sequence A)) mean, and what can go wrong?
MODEL ANSWERDIRECT ANSWER
MANDATORY in SWIFT Standards MT.
WHY IT MATTERS
The sender's own reference for the whole request — the number quoted in any later query about it. One reference covers the full message, which may contain many transactions; individual transactions are identified by field 21 in each sequence B. Pitfall: Reusing references defeats duplicate detection and muddies investigation trails.
TRICKYMT101In MT101, what does :28D: (Message Index / Total (sequence A)) mean, and what can go wrong?
MODEL ANSWERDIRECT ANSWER
MANDATORY in SWIFT Standards MT.
WHY IT MATTERS
Says which message this is in a set, such as 1 of 3, when a large request is split across several MT101s. All messages in a chained set share the sender's reference and must arrive as a complete set before execution. Pitfall: Broken chaining — a missing index or inconsistent totals — leaves the executing bank with a partial batch it cannot safely process.
MEDIUMMT192In MT192, what does :20: (Transaction reference number) mean, and what can go wrong?
MODEL ANSWERDIRECT ANSWER
MANDATORY. Unique reference for the cancellation request itself.
MEDIUMMT192In MT192, what does :21: (Related reference) mean, and what can go wrong?
MODEL ANSWERDIRECT ANSWER
MANDATORY. Quotes field 20 of the original payment being cancelled.
MEDIUMMT195In MT195, what does :20: (Query reference) mean, and what can go wrong?
MEDIUMMT195In MT195, what does :21: (Related reference) mean, and what can go wrong?
MODEL ANSWERDIRECT ANSWER
MANDATORY. Reference of the original message being queried.
MEDIUMMT196In MT196, what does :20: (Answer reference) mean, and what can go wrong?
MEDIUMMT196In MT196, what does :21: (Related reference) mean, and what can go wrong?
MODEL ANSWERDIRECT ANSWER
MANDATORY. Reference of the MT192 or MT195 being answered.
MEDIUMMT199In MT199, what does :20: (Transaction reference) mean, and what can go wrong?
MODEL ANSWERDIRECT ANSWER
MANDATORY. Unique reference for this free-format message or case.
MEDIUMMT199In MT199, what does :21: (Related reference) mean, and what can go wrong?
MODEL ANSWERDIRECT ANSWER
MANDATORY. Reference of the payment or request being discussed.
MEDIUMMT202 COVIn MT202 COV, what does :20: (Transaction Reference Number (sequence A)) mean, and what can go wrong?
MODEL ANSWERDIRECT ANSWER
MANDATORY in SWIFT Standards MT.
WHY IT MATTERS
The sender's unique reference for the cover transfer. Distinct from the underlying MT103's reference — the linkage happens through field 21 and the shared UETR.
TRICKYMT202 COVIn MT202 COV, what does :21: (Related Reference (sequence A)) mean, and what can go wrong?
MODEL ANSWERDIRECT ANSWER
MANDATORY in SWIFT Standards MT.
WHY IT MATTERS
Links the cover to the underlying customer payment. Market practice is to quote the sender's reference (field 20) of the underlying MT103 here, so the beneficiary bank can match cover to announcement. Pitfall: An unmatchable related reference leaves the customer payment waiting for funds that have in fact arrived.
MEDIUMMT202In MT202, what does :20: (Transaction Reference Number) mean, and what can go wrong?
MODEL ANSWERDIRECT ANSWER
MANDATORY in SWIFT Standards MT.
WHY IT MATTERS
The sender's unique reference for this transfer. Adjacent banks reconcile and query on this reference; end-to-end tracking uses the UETR in the header.
TRICKYMT202In MT202, what does :21: (Related Reference) mean, and what can go wrong?
MODEL ANSWERDIRECT ANSWER
MANDATORY in SWIFT Standards MT.
WHY IT MATTERS
Points at the business event this transfer settles — a deal reference, a related payment, or NONREF when nothing applies. Receiving banks auto-match incoming cover and settlement credits on this field. A meaningful related reference is the difference between straight-through reconciliation and an investigation. Pitfall: Defaulting to NONREF when a real reference exists pushes the receiver into manual matching.
MEDIUMMT900In MT900, what does :20: (Transaction reference) mean, and what can go wrong?
MODEL ANSWERDIRECT ANSWER
MANDATORY. Reference assigned to this debit confirmation.
MEDIUMMT900In MT900, what does :21: (Related reference) mean, and what can go wrong?
MODEL ANSWERDIRECT ANSWER
MANDATORY. Reference of the payment or instruction that produced the debit.
MEDIUMMT910In MT910, what does :20: (Transaction Reference Number) mean, and what can go wrong?
MODEL ANSWERDIRECT ANSWER
MANDATORY in SWIFT Standards MT.
WHY IT MATTERS
The sender's unique reference for this confirmation. References the advice itself, not the payment that caused the credit — that link lives in field 21.
TRICKYMT910In MT910, what does :21: (Related Reference) mean, and what can go wrong?
MODEL ANSWERDIRECT ANSWER
MANDATORY in SWIFT Standards MT.
WHY IT MATTERS
The reference of the transaction that produced the credit, as known to the sender. This is what the account owner's reconciliation matches against expected receipts. Its usefulness depends entirely on what reference the crediting transaction carried. Pitfall: If the underlying payment's reference was lost or replaced along the chain, the advice arrives but nothing matches.
MEDIUMMT940In MT940, what does :20: (Transaction Reference Number) mean, and what can go wrong?
MODEL ANSWERDIRECT ANSWER
MANDATORY in SWIFT Standards MT.
WHY IT MATTERS
The sender's unique reference for this statement message. Identifies the message, not the account or period — those live in fields 25a and 28C.
TRICKYMT940In MT940, what does :21: (Related Reference) mean, and what can go wrong?
MODEL ANSWERDIRECT ANSWER
OPTIONAL in SWIFT Standards MT.
WHY IT MATTERS
Links the statement to a request, when it was produced in answer to one. Used when the statement responds to an MT920 request; routine scheduled statements omit it.
MEDIUMMT941In MT941, what does :20: (Transaction reference) mean, and what can go wrong?
MEDIUMMT941In MT941, what does :21: (Related reference) mean, and what can go wrong?
MODEL ANSWERDIRECT ANSWER
MANDATORY. Reference to the request or service event where applicable.
MEDIUMMT942In MT942, what does :20: (Transaction reference) mean, and what can go wrong?
MEDIUMMT942In MT942, what does :25: (Account identification) mean, and what can go wrong?
MEDIUMMT950In MT950, what does :20: (Transaction reference) mean, and what can go wrong?
MODEL ANSWERDIRECT ANSWER
MANDATORY. Reference assigned to the statement message.
MEDIUMMT950In MT950, what does :25: (Account identification) mean, and what can go wrong?
Payments foundations
TRICKYMT103In MT103, what does :20: (Sender's Reference) mean, and what can go wrong?
MODEL ANSWERDIRECT ANSWER
MANDATORY in SWIFT Standards MT.
WHY IT MATTERS
The sender's own reference for this payment — the number everyone quotes when questions come up later. It anchors queries, cancellations, and reconciliation between adjacent banks; end-to-end tracking across the whole chain relies on the UETR in the header instead. Pitfall: Reused references break duplicate detection and confuse investigations.
MEDIUMMT103In MT103, what does :23B: (Bank Operation Code) mean, and what can go wrong?
MODEL ANSWERDIRECT ANSWER
MANDATORY in SWIFT Standards MT.
WHY IT MATTERS
Tells the receiving bank what kind of transfer this is; CRED marks an ordinary credit transfer. CRED is the everyday value. Other codes are rare, tied to specific service arrangements, and some legacy values have been withdrawn over successive standards releases.