What the data for this category looks like
Data sources for commercial property intelligent due diligence reports include real estate property right registration systems, business district passenger flow monitoring platforms, property operation and maintenance ledgers, lease filing databases, and surrounding business format statistics systems.
Update rhythms vary by data type:
- Ownership right information is updated quarterly
- Lease transaction data is updated monthly
- Energy consumption and operation records are updated daily
- Business district passenger flow data is updated hourly
Single report structure includes basic information, lease details, operation and maintenance ledgers, and business district association modules. Fields include building area (unit: square meters), average monthly rent (unit: yuan/square meter/month), total energy consumption (unit: kilowatt-hours), property right number, lease start and end dates, and more. Document length varies based on property scale and due diligence scope.
What Constraints These Characteristics Impose on HTTP Interfaces and External Systems
Multiple data sources require connecting to HTTP interfaces from multiple external systems. Different systems use distinct authentication methods and request formats. Dynamic switching of authentication configurations must be supported.
Different update rhythms require setting differentiated polling intervals. This avoids frequent pulling of low-frequency updated data that triggers external system rate limits. It also prevents delayed pulling of high-frequency updated data that leads to insufficient report timeliness.
Single reports have large volumes and special field units. Interfaces must support paginated pulling and strict field mapping. Units or core fields cannot be arbitrarily converted.
External system response speeds and data return limits must be adapted to the scale of commercial property data. Incomplete report generation is avoided when interface restrictions are not accounted for.
Configuration Settings
| Configuration Item | Recommended Value | Rationale |
|---|---|---|
external_api_timeout | 30-60 seconds | Commercial property data mostly comes from internal enterprise systems, with slower response speeds than public interfaces |
external_api_batch_size | 50-100 items/request | Adapt to batch pulling of lease details and operation and maintenance records, avoid exceeding external system rate limit thresholds |
response_field_mapping | Strictly match original field names and units | Units of commercial property data (square meters, yuan/month) cannot be arbitrarily converted, otherwise due diligence conclusions will be affected |
max_response_size | 500 MB | Adapt to the volume of attachments such as drawings and ledgers included in a single commercial property due diligence report |
api_auth_type | Switch based on external system configuration | Property data systems from different sources use different authentication methods such as API Key, OAuth2 |
polling_interval | 1 hour - 1 quarter | Match the update frequency of different data types, balance timeliness and system load |
The parameter values provided on this page are all common recommended starting points for determining configurations. Actual values are affected by material form, data volume and business rules. Specific issues require specific analysis, and it is recommended to test on your own samples before finalizing.
Three Common Misconfigurations
- Phenomenon: A
413 Payload Too Largestatus code is returned when calling an external data interface. Cause: Themax_response_sizeconfiguration was not adjusted, and the large volume of attachments and long text data in commercial property due diligence reports were not adapted to. - Phenomenon: Source original text cannot be viewed after calling the conversation interface. Cause: The
return_source_contentparameter was not enabled, and multi-paragraph document association sources of commercial property due diligence reports were not split. - Phenomenon: The
dataIdfield cannot be obtained after calling the like function. Cause: The unique identifier field of commercial property data (such as real estate registration number) was not bound in the interface mapping configuration, resulting in an invaliddataIdbeing unable to be generated.
How to Verify the Configuration Is Correct
- Call the configured external data interface to pull a single set of commercial property due diligence data, and verify that the units of the returned fields match those of the original business system.
- Initiate a conversation request based on the commercial property due diligence report, and check whether the returned results are associated with source fragments of the original document.
- Call the like function interface, and check whether the returned results include the
dataIdfield, and whether the field value matches the unique identifier of the corresponding property. - Simulate calling the interface at different intervals, confirm that the interface response status codes meet expectations, and unnecessary rate limit restrictions are not triggered.
Question material comes from public community discussions. Configuration values are common starting points and should be measured against your own samples. Verified on 2026-09-14.