Executive Summary On the heels of the interim final rule (IFR) “Heightened Requirements for Foreign Importers of Record” (91 FR 69977, published November 6, 2026), CBP issued CSMS #70381183, which announces three new data fields on CBP Form 3461 (entry/immediate delivery) and CBP Form 7501 (entry summary) and their electronic equivalents. The fields are “U.S. Importer of Record,” “Acting on behalf of,” and “Principal on Power of Attorney.” As of January 5, 2027, the IFR requires that, to enter or withdraw goods for consumption, a foreign importer of record (IOR) be CTPAT-validated or designate a CTPAT-validated broker to make entry. CBP states it has built additional validation checks and may reject entries and entry summaries as of that date if a foreign IOR files without CTPAT validation or a CTPAT-validated broker, or if a non-CTPAT-validated broker acting as IOR does not provide the principal when required. Brokers may submit a delayed compliance request no later than January 5, 2027. CBP will also post a pre-recorded overview webinar on its Strengthening Customs Enforcement page. This analysis summarizes what the message says, how the three fields relate to the rule, and what filers commonly consider as they prepare. For a summary of the rule itself, see our analysis of the interim final rule.
New Data Fields on CBP Forms 3461 and 7501: What CSMS #70381183 Says About the Foreign IOR Rule
(CBP表格3461和7501的新增数据字段：CSMS #70381183对外国进口商记录规则的说明)
1 · Where the Message Fits
The Legal Background
CSMS #70381183 states that, under Executive Order 14411, “Strengthening Customs Enforcement,” Section 2, and governing statutes, CBP is establishing new requirements for foreign importers of record when making entry, with corresponding responsibilities for licensed customs brokers. It cites the interim final rule, “Heightened Requirements for Foreign Importers of Record,” 91 FR 69977, dated November 6, 2026 (Federal Register document 2026-22735).
The Core Requirement
According to the CSMS, as of January 5, 2027 the IFR requires that, in order to enter or withdraw goods for consumption, a foreign IOR must either:
- be validated under the Customs Trade Partnership Against Terrorism (CTPAT), or
- designate a CTPAT-validated broker to make entry.
The IFR is effective January 5, 2027, and the Federal Register document states that all customs brokers are expected to be in full compliance no later than May 6, 2027.
What the CSMS Adds
The CSMS is the operational counterpart to the rule: it tells the trade how the new requirements will appear on the entry documents and in the electronic filing.
⚠️ Critical Takeaway: The IFR sets the requirements; CSMS #70381183 describes the data CBP will collect to apply them and the checks CBP has built.
2 · The Three New Data Fields
CBP states that three new data fields have been added to CBP Form 3461 and CBP Form 7501 and their electronic equivalents.
Field 1: “U.S. Importer of Record”
| Select | When |
|---|---|
| “Y” | The IOR meets the U.S. IOR criteria; or a broker acts as IOR and the principal on the power of attorney meets the U.S. IOR criteria |
| “N” | The IOR, or the applicable principal, does not meet those criteria |
Field 2: “Acting on behalf of”
This field applies where the broker lists itself as the filer and IOR.
| Select | When |
|---|---|
| “Y” | The customs broker lists itself as both the filer and the IOR for purposes of filing entry on behalf of the principal |
| “N” | Otherwise |
Field 3: “Principal on Power of Attorney”
| Requirement | Detail |
|---|---|
| When required | When a non-CTPAT-validated broker acts as the IOR on behalf of a principal |
| What the broker reports | The principal’s IOR number, such as an SSN, EIN, or CBP-assigned number, linked to the principal’s CBP Form 5106 |
How the Fields Connect
| Field | Connects to |
|---|---|
| U.S. Importer of Record | The rule’s definition of a U.S. IOR and the requirement to declare U.S. IOR status at entry |
| Acting on behalf of | Situations where a broker is both filer and IOR for a principal |
| Principal on Power of Attorney | The broker’s duty to identify the principal when a non-validated broker acts as IOR; the principal’s IOR number is tied to its Form 5106 record |
The link to Form 5106 follows from CBP’s separate review of the accuracy of importer data on that form (see our earlier analysis): the principal’s number reported on the entry must correspond to a Form 5106 record.
⚠️ Critical Takeaway: The new fields ask each filing to state whether the IOR (or the principal) meets the U.S. IOR criteria and, in broker-as-IOR situations, to identify the principal.
3 · The Validation Checks
CBP states that it has built additional validation checks and may reject entries and entry summaries as of January 5, 2027 if:
| Condition | Result Described by CBP |
|---|---|
| A foreign IOR attempts to file entry without being CTPAT-validated or without a CTPAT-validated customs broker | Entry may be rejected |
| A non-CTPAT-validated customs broker, when acting as the IOR, does not provide the principal when required | Entry may be rejected |
The CSMS uses the word “may,” and it does not describe the technical message specifications or reject codes. Filers typically refer to CBP’s technical documentation and to their software providers for those details.
⚠️ Critical Takeaway: Entry rejection is the operational consequence CBP describes for filings that do not meet the CTPAT condition or omit a required principal.
4 · Delayed Compliance Requests and Other Resources
Delayed Compliance
According to the CSMS, brokers may submit a delayed compliance request no later than January 5, 2027, through a form on CBP’s Strengthening Customs Enforcement pages (CBP delayed compliance page). The rule’s text addresses the scope of delayed compliance with the broker verification requirement; the Federal Register document governs.
Webinar
With publication of the IFR, CBP says a pre-recorded webinar providing an overview of the new requirements will be posted on the Strengthening Customs Enforcement page.
Questions
CBP directs questions about the message to the Office of Trade, Trade Modernization Division, at ForeignIOR@cbp.dhs.gov.
5 · Timeline
| Date | Event |
|---|---|
| June 3, 2026 | Executive Order 14411 signed |
| November 6, 2026 | IFR published in the Federal Register (91 FR 69977); CSMS #70381183 describes the new data fields |
| January 5, 2027 | IFR effective; CTPAT condition for foreign IOR entry applies; new fields in effect; validation checks and possible entry rejection; last day to submit delayed compliance requests; comments due |
| May 6, 2027 | All customs brokers expected to be in full compliance with the rule |
6 · Implementation Considerations
The following considerations follow from the CSMS and the rule. They are informational rather than prescriptive.
For Customs Brokers and Filers
| Area | Commonly Raised Consideration |
|---|---|
| System readiness | Whether the filer’s software supports the three new fields on Forms 3461 and 7501 and their electronic equivalents, and the vendor’s timeline |
| Principal’s IOR number | Where the broker will obtain and verify the principal’s SSN, EIN, or CBP-assigned number and confirm it matches the Form 5106 record |
| U.S. IOR status | How the broker will determine and document whether a client or principal meets the U.S. IOR criteria |
| Power of attorney | Whether powers of attorney are in place for each principal, including where the broker acts as IOR |
| CTPAT status | Whether the broker is CTPAT-validated, which determines whether the “Principal on Power of Attorney” field is required in broker-as-IOR situations |
| Delayed compliance | Whether a delayed compliance request is warranted, and the January 5, 2027 deadline for requests |
For Importers and Service Providers
| Area | Commonly Raised Consideration |
|---|---|
| Foreign IORs | Whether the entity is CTPAT-validated, or whether its broker is |
| Information to brokers | What records the importer can provide to support U.S. IOR status or the principal’s IOR number |
| Shipment planning | How an entry rejection would affect cargo already in transit or scheduled to arrive after January 5, 2027 |
| Coordination | How importers, brokers, and forwarders share the data the fields require |
⚠️ Critical Takeaway: The CSMS turns the rule’s requirements into specific fields and checks, so the practical questions are about data, system support, and CTPAT status.
7 · Conclusion: From Rule to Entry Data
CSMS #70381183 links the interim final rule on foreign importers of record to the entry forms: three new data fields, validation checks that may reject entries from January 5, 2027, and a delayed compliance request path for brokers that closes on the same date.
Key Takeaways
| Factor | Detail |
|---|---|
| CSMS | #70381183 — Updates to CBP Form 3461 and CBP Form 7501 and their electronic equivalents |
| Rule | “Heightened Requirements for Foreign Importers of Record,” interim final rule, 91 FR 69977 (Nov. 6, 2026) |
| Core Requirement (Jan. 5, 2027) | Foreign IOR must be CTPAT-validated or designate a CTPAT-validated broker to enter or withdraw goods for consumption |
| New Field 1 | “U.S. Importer of Record” — Y if the IOR (or the principal when a broker acts as IOR) meets the U.S. IOR criteria; otherwise N |
| New Field 2 | “Acting on behalf of” — Y if the broker lists itself as both filer and IOR for the principal; otherwise N |
| New Field 3 | “Principal on Power of Attorney” — required when a non-CTPAT broker acts as IOR; principal’s IOR number linked to its Form 5106 |
| Validation Checks | CBP may reject entries/entry summaries from Jan. 5, 2027 in the two situations described |
| Delayed Compliance | Brokers may request by Jan. 5, 2027 |
| Full Broker Compliance | Expected by May 6, 2027 |
| Inquiries | ForeignIOR@cbp.dhs.gov (Office of Trade, Trade Modernization Division) |
The Bottom Line
For brokers, importers, and the providers between them, the CSMS indicates what CBP will ask for on each entry and what it may reject. Organizations that would like an outside perspective on their entry data and CTPAT arrangements may find it worthwhile to work with a trade compliance partner familiar with CBP’s IOR requirements.
The message is clear: from January 5, 2027, CBP will collect three new data points on Forms 3461 and 7501 to apply the foreign IOR rule, and may reject entries that do not satisfy its conditions.
This analysis reflects CBP’s Cargo Systems Messaging Service message #70381183 and the interim final rule “Heightened Requirements for Foreign Importers of Record” (91 FR 69977, November 6, 2026; document 2026-22735), implementing Section 2 of Executive Order 14411, “Strengthening Customs Enforcement” (White House; 91 FR 35125). CBP may issue further guidance; readers should consult the Federal Register document, CBP’s Strengthening Customs Enforcement page, and CBP’s technical documentation. Organizations should consult with customs counsel and trade compliance professionals for guidance tailored to their specific circumstances.
