What this category of data looks like
Data for this category comes from real estate registration information systems, cadastral survey databases, housing transaction online signing systems, tax systems, and electronic certificate repositories. The update frequency is daily. Commonly used documents include registration applications, ownership certificates, survey results, tax payment vouchers, real property right certificates, and real estate registers. Data fields include real estate location, right type, right holder identity information, survey area, tax payment details, and more. Data formats vary across sources: cadastral survey data mostly uses structured coordinate fields, while tax system data includes multi-dimensional tax items.
What constraints these characteristics impose on HTTP interfaces and external systems
Multi-source data access requires interfaces to comply with format specifications of different systems to avoid data parsing errors. Daily updated data sources require interfaces to support flexible configuration of incremental pull or full synchronization to align with daily data verification rhythms. The diversity of document fields requires interface parameters to cover required fields for different materials such as registration applications and ownership certificates, while reserving extended fields for special scenarios. The serious potential consequences of errors require interfaces to include pre-verification and retry mechanisms to reduce registration errors caused by abnormal data. Cross-department collaboration scenarios require interfaces to support linked calls with housing construction, tax, and other systems to ensure consistency of material data.
How to set configurations
| Configuration Item | Recommended Setting | Rationale |
|---|---|---|
Authorization | Bearer token, valid for 7 days | Complies with API authentication standards of real estate registration systems, reduces probability of authentication failures |
variables | Configure real estate location and right holder information as optional parameters | Adapts to flexibility of material submission for different registration scenarios |
| Request timeout | 30–60 seconds | Covers typical response durations for cadastral data queries and tax verification |
responseData | Extract real property right certificate number and survey area as core return fields | Matches required field requirements for registration documents |
| Error retry count | 2 times | Addresses network fluctuations or temporary unavailability of third-party systems |
| Large file transfer threshold | 1000 MB | Adapts to interface transfer requirements for large files such as survey results |
Three common errors
- Custom tool
variablesis not configured with optional parameters, resulting in missing non-required field errors during calls. The interface returns a "missing required parameter" status code. The cause is that non-mandatory fields such as right holder contact information are not set as optional. Authorizationconfiguration format is incorrect, no Bearer prefix is added or an expired token is used. The interface returns a 401 Unauthorized status code. The cause is that third-party system authentication specifications are not followed.- Request timeout is set too short, resulting in timeout when querying the cadastral database. The interface returns a 504 Gateway Timeout status code. The cause is that sufficient response duration is not reserved to cover multi-source data verification processes.
How to confirm the configuration is correct
- In the FastGPT v4.17.0 test panel, pass the required real estate location and application type parameters, call the interface and check that the return status code is 200 to confirm that
Authorizationauthentication takes effect. - View the
responseDataanalysis results, confirm that the extracted real property right certificate number and survey area fields exist and their formats meet business requirements. - Configure
variablesas optional parameters, pass the non-required right holder contact information, confirm that the interface returns data normally with no required field errors. - Upload a survey result file within 1000 MB, confirm that the interface can receive and process it normally with no transfer timeout or truncation errors.
The values listed above are common starting points and should be evaluated 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.