What Data for This Category Looks Like
Documents and materials for general contracting of building construction projects mainly come from links such as project approval, construction progress submission, project payment settlement, and completion acceptance filing. Data update rhythm follows project milestones: updated when submission nodes are submitted, updated during monthly settlement cycles, and centrally archived during the completion phase. The document structure includes fixed fields such as project number, section scope, construction unit, submission item, and attached file link. Units involve engineering-specific measurement standards such as square meters, cubic meters, working days, and ten thousand yuan. The length of individual documents varies widely, ranging from a few pages of submission forms to dozens of pages of completion reports.
What Constraints These Characteristics Impose on the "Workflow Orchestration" Link
Fixed fields require workflows to bind project-specific variables to avoid errors caused by manual input. The rhythm of updates tied to milestones requires workflows to match project trigger events, adapting to document generation needs for different nodes such as submission, settlement, and completion. The characteristics of long text and multiple attachments require workflows to support long text processing and multi-file reading. Differences between document types require workflows to set branch logic corresponding to generation rules for different documents such as submission forms, settlement statements, and completion reports. The attributes of engineering documents require workflows to configure permission verification links to ensure data access compliance.
How to Set the Configurations
The following are specific configuration recommendations for FastGPT v4.17.0:
| Configuration Item | Suggested Setting | Rationale |
|---|---|---|
variables | Bind project number, section name, and submission type as preset variables | Matches the fixed fields of documents for general contracting of building construction projects, enabling automatic filling and parameter passing |
nodeId | Correspond to the unique identifier of the knowledge base search node | Used to associate the knowledge base ID with the corresponding retrieval link, complying with parameter passing specifications |
| Single search limit | Top 5-8 entries | Adapts to the length of single documents for building construction engineering documents, avoiding redundant recall that affects processing efficiency |
| Maximum context | 8000-12000 token | Adapts to the processing needs of long-text engineering documents, ensuring complete reading of core content |
| Timeout setting | 600 seconds | Addresses the reading and generation duration of large completion documents, avoiding task interruptions |
| Maximum attachment size | 1000 MB | Adapts to the attachment storage and reading needs of engineering documents, limiting loading of invalid large files |
| Streaming output switch | Enabled | Meets the real-time return requirements of code execution modules, adapting to streaming output scenarios |
Three Common Mistakes
- Phenomenon: The code execution module returns a "missing parameter" error, with empty fields in the request body. Cause: Failed to bind preset fields in
variablesto the request parameter names, incorrectly used local file names as parameter names, and failed to match the fixed fields of building construction engineering documents. - Phenomenon: The AI chat node does not receive the initial user question, making it impossible to generate the corresponding document. Cause: The output of the judge did not correctly connect to the input parameter channel of the AI chat node, and the user question transmission link was not completed.
- Phenomenon: The knowledge base search node returns empty results. Cause: Failed to pass the knowledge base ID to the search node via
variables, resulting in the retrieval scope not being associated with the engineering documents of the corresponding section.
How to Confirm the Configuration Is Complete
- Enter the workflow's variable configuration page, confirm that the project-specific fields for general contracting of building construction projects have been correctly added as preset variables.
- Manually trigger the test node, check that the request body parameter names of the code execution module fully match the fixed fields of the documents.
- Run the knowledge base search link, confirm that the retrieval scope has been associated with the engineering documents of the corresponding section.
- After enabling the streaming output switch, test whether the return of the code module is real-time segmented output.
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.