What the documents look like
Certificate-of-origin work supports import-country tariff treatment and customs clearance. This differs from letter-of-credit document examination, and a certificate application is not necessarily governed by letter-of-credit terms. The working materials are the certificate application, the commercial invoice, the packing list, and production-cost records. Sources include China's International Trade Single Window, chamber-of-commerce systems, enterprise production records, and customer clearance requirements. Material updates arrive per shipment or in batches.
Operations handover for this category has to distinguish the current state of each item: whether an application is a draft, awaiting submission, or already accepted, and whether a request is pending review or already authorized. Knowledge-base retrieval and recall only locates stored content by similarity or keyword. A retrieval hit does not constitute operating authority, and it does not mean an approval has been completed.
Constraints at the retrieval step
The knowledge-base search node returns cited content as an array whose length can be 0. When nothing is found, the output path still runs. An empty result can therefore feed downstream design, but it cannot be read as proof that a business request was rejected or does not exist.
The search node can associate one or more knowledge bases that use the same vector model. Bases built on different vector models cannot be associated together. During checking, verify the vector-model identifier first, exclude those that do not match, and record what was actually observed. Association scope is retrieval scope; it has nothing to do with operating permissions or entity separation. The minimum relevance value is a filtering threshold and cannot be used as a permission or entity filter.
Hypothetical paper exercise: the source material reads, "Company A submitted a certificate-of-origin application on 10 March 2026, application number HYP-2026-0310-01, accompanied by a commercial invoice and a packing list; the current status is pending review." The handover sentence to be assessed is, "The application has been approved and can be arranged for dispatch to the customer for customs clearance." In this exercise, pending-review status does not demonstrate a lack of operating authority, and it does not equal approval. Signing, reaching cooperation, and contract effectiveness are separate facts; no authorization clause is to be supplied to fill the gap.
Configuration and implementation checks
| Configuration item | Hypothetical starting point for this exercise | Reason for the choice and comparison method |
|---|---|---|
| Associated knowledge bases | Associate only the certificate-of-origin knowledge base that uses the same vector model | Verify that the vector-model identifiers match before associating, and exclude bases with different models |
| Search mode | Test semantic retrieval and full-text retrieval separately | Compare recall differences between the two modes using the same set of questions; no mode is presumed suitable in advance |
| Citation ceiling | A hypothetical starting value expressed in tokens | Test with real materials of different lengths to see whether content stays complete, then adjust |
| Minimum relevance | A hypothetical starting value, effective only in semantic retrieval or when result reranking is used | Label relevant and irrelevant samples first, then compare the effect of threshold adjustments |
| Question optimization | Enabled for multi-turn follow-up questions that contain references | Compare the original question with the optimized question and check whether the subject was altered |
| Result reranking | Enabled according to settings when a rerank model is available | Compare scores before and after reranking, and filter candidates by the rerank score |
These values are hypothetical starting points for this exercise, not official defaults. RRF is the fusion process for mixed-retrieval results and is not configured as a standalone switch. Image retrieval requires image input and the corresponding model capability; reranking requires a model and is enabled according to settings. The optional paths listed in the documentation do not mean every request executes all of them.
Three common errors
- Treating a retrieval hit as a basis for authorization. The input is the pending-review application in the sample above. If the presence of the application record is used to infer that the application has been approved, the comparison is between record existence and approval status. These are different fields, and the observed result should be that the status field still reads pending review.
- Treating minimum relevance as a permission filter. The input is a semantic-retrieval parameter together with an unrelated business record. The comparison is between the similarity score and access permission. The observed result should be that similarity affects ordering and filtering only, and does not exclude unauthorized records.
- Associating knowledge bases across different vector models. The input is two knowledge bases with different vector-model identifiers. The comparison object is the model identifier. The observed result should be that the non-matching base is excluded and no cross-model retrieval comparison is performed.
How to verify the setup
- Compare the sample source text, "Company A submitted a certificate-of-origin application on 10 March 2026, application number HYP-2026-0310-01, accompanied by a commercial invoice and a packing list; the current status is pending review," against the proposed sentence, "The application has been approved and can be arranged for dispatch to the customer for customs clearance." The comparison is between the application-status field and the approval wording of the proposed sentence. The condition is met when the proposed sentence conflicts with the source status; the sentence is then judged unsupported, and the evidence gap is retained.
- Use a clearly written input of an empty citation array to check the downstream design. The comparison is between an output citation length of 0 and the downstream handling logic. The condition is met when the output path runs through and the downstream logic does not trigger a business action because of the empty result. Do not claim that a fictional rule search necessarily returns an empty array.
- Use two knowledge-base identifiers with different vector-model identifiers to check the association condition. The comparison object is the model-identifier field. The condition is met when the non-matching identifier is excluded and the actual observation is recorded. Do not infer the runtime result after exclusion.
All three verifications address the retrieval and recall step only. They do not involve identity certification, report analysis, or approval execution. Fields not stated in the documents remain unknown. Pending review does not equal absence of authority, and a quotation validity period does not indicate a supply period.