What the Data for This Category Looks Like
The data for this category is primarily sourced from the national land spatial planning unified map, project approval and supervision platform, land use status database, and ecological protection redline data. Update frequency is irregular. Commonly generated and used documents include land pre-examination and site selection opinions, construction land planning permits, construction project planning permits, redline diagrams, and planning conditions. Most document structures include fields such as project subject information, site selection range coordinates, land use scale, and control requirements. Field units include hectares, square meters, geographic coordinates, and others. The length of a single document varies widely. Some materials with multiple attached diagrams can reach several thousand characters.
Constraints Imposed on Multi-turn Dialogue and Prompting
The data sources for this category are scattered, and updates follow no fixed cycle. Multi-turn dialogue must dynamically call the latest official data, and cannot rely on static knowledge bases to store all content. Document structures are complex and include multiple types of control fields. Multi-turn dialogue needs to split processes according to the approval workflow, and sequentially verify project subject, site selection range, land use scale, and other information to avoid missing key verification items. The length of a single document varies widely. It is necessary to adapt to text input and output of different lengths, to prevent control requirements from being lost due to context truncation. In addition, errors directly affect project approval and construction. The dialogue process must include real-time verification links to ensure that the content of each round of output meets the specification requirements for land pre-examination and planning permits.
Configuration Settings
| Configuration Item | Recommended Approach | Rationale |
|---|---|---|
| Maximum Context | First 8000–12000 characters | Adapts to the typical length of single land planning documents, retains complete control requirements and redline range information |
| Single Reply Limit | 1500 characters | Matches the single-paragraph output specification of approval documents, avoids content that is too long to exceed the format requirements of the approval system |
variables Binding | Bind the latest data from the project approval and supervision platform | Ensures that data such as land use scale and site selection range called during dialogue are real-time updated official data |
| Question Optimization | Calibrate based on actual testing | Adapts to multi-turn follow-up questioning logic in land pre-examination scenarios, corrects vague site selection descriptions in user input |
messages Format | Split dialogue turns according to the system-preset approval document template | Aligns with the document drafting process for land pre-examination and planning permits, ensures each round of dialogue focuses on a single verification link |
chatId Persistence | Enable persistent storage | Retains the context of multi-turn dialogue, avoids repeated verification of basic project information |
Reference only; verify against the target FastGPT release and deployment documentation.
Three Common Misconfigurations
- An
The value of "offset" is out of rangeerror occurs during long text tasks. The symptom is that the task shows normal completion but returns an error prompt. The cause is that the configured context length does not match the actual length of the land pre-examination document, resulting in text index out of bounds. - Parameters cannot be passed correctly when uploading multiple files. The symptom is that attachment content in the
messagesfield is not correctly recognized. The cause is that user input content is not spliced according to the multi-file parameter passing format required by the platform. - The virtual machine reinstalls dependencies each time a dialogue is run. The symptom is a dependency missing error when the dialogue starts. The cause is that a persistent runtime environment cache is not configured, and dependencies are reinitialized for each session.
How to Verify Correct Configuration
- Upload a typical land pre-examination document with multiple attached diagrams, test whether the
The value of "offset" is out of rangeerror appears during long text input, and confirm that the context length configuration is reasonable. - Construct a test dialogue including two attachments: redline diagram and planning conditions, check whether the
messagesfield correctly transmits all relevant information of the attachments, and confirm that the multi-file parameter passing format is correct. - View the runtime environment configuration, confirm that dependencies have completed persistent caching, and avoid reinstalling dependency packages each time a dialogue is run.
- Check the log storage configuration, confirm that the retention period has been adjusted to a cycle that meets business requirements, and that historical approval-related dialogue records can be retrieved.
The configuration values provided here are common starting points, and should be evaluated against the user's own specific 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.