What the data for this category looks like
Hazardous chemicals storage and transportation declaration materials and file data mainly come from enterprise electronic declaration forms, emergency management department filing archives, and warehouse in-outbound logs. Declaration files are archived after each declaration batch is completed. Filing data is updated monthly, and in-outbound logs are synchronized daily. The document structure of a single file includes declaration unit information, hazardous chemical name, 5-digit UN number, storage warehouse and location, transportation and storage volume (unit: ton), approval document number, and validity period. All fields use standardized formats. The UN number must comply with UN dangerous goods coding rules, and the storage and transportation volume is accurate to two decimal places.
Constraints for multi-turn dialogue and prompt workflows
Standardized UN number and storage volume fields require multi-turn dialogue to guide users to input content that meets the format, avoiding vague statements. There are time dimension differences between monthly updated filing data and daily updated in-outbound logs, so prompts must clearly specify the data time range to prevent confusion between historical filings and current real-time data. The text size of a single file is moderate, so multi-turn dialogue must retain the complete declaration-verification process while avoiding excessive context that causes processing delays.
How to set configurations
| Configuration Item | Recommended Setting | Rationale |
|---|---|---|
| Maximum context length | 800–1200 characters | Matches the average text size of a single hazardous chemicals storage and transportation declaration file, avoids truncating core approval fields |
messages history retention limit | First 20 dialogues | Adapts to typical interaction rounds of declaration review, fully retains the complete process of declaration instructions and verification questions |
variables bound fields | Declaration unit, UN number, storage and transportation volume | Corresponds to core required fields of the file, automatically fills to reduce repeated input |
| Dialogue permission association | Bind declaration batch via chatId | Ensures users can only access their own submitted declaration dialogue records |
| Single search limit | Top 5 entries | Matches the amount of associated data for hazardous chemicals storage and transportation files, avoids interference from redundant information |
| Timeout threshold | 600 seconds | Matches the average response duration of declaration review, prevents timeout caused by long text parsing |
Three common mistakes
- Phenomenon: Declaration dialogues submitted by different users cannot be viewed individually, or dialogues created via API are not displayed in the page session. Cause: The user's corresponding declaration batch permission is not bound via
chatId, causing the permission verification logic to fail. - Phenomenon: The Human field is empty in the response record preview after an API call. Cause: The
messagesparameter does not correctly pass the user's question content, or the parameter structure does not meet system requirements. - Phenomenon: Context truncation or verification failure occurs frequently during dialogue interaction. Cause: A reasonable maximum context length or single search limit is not set, resulting in truncation of core declaration fields, or
variablesfields are not bound, leading to missing verification.
How to confirm configuration is complete
Reference only; verify against the target FastGPT release and deployment documentation.
- Submit a test declaration, initiate a dialogue using different accounts, confirm that only the initiating account can view the corresponding dialogue record.
- Call the API to pass the
messagesparameter, confirm that the Human field in the response record contains the corresponding content. - Adjust the context length and single search limit parameters, submit declaration materials of different lengths, confirm that core fields are not truncated and the associated data volume meets expectations.
- After binding the
variablesfields, initiate a dialogue to confirm that the system automatically fills in the content of the corresponding fields.
The values provided are common starting points and should be measured against the reader's own samples.
Question material comes from public community discussions. Configuration values are common starting points and should be measured against your own samples. Verified on 2026-09-28.