What the data for this category looks like
Data sources for financial leasing intelligent due diligence reports include lessee business information, leased asset ownership registration records, past lease contracts, corporate cash flow statements, and third-party credit reports. Data is generated per individual lease project. It is collected exclusively before project launch, and updated only when leased asset ownership or rent payment status changes. The document structure includes a structured core field package and multi-format attachments. Structured fields include the lessee’s unified social credit code, leased asset original value, rent payment cycle, and other relevant items. Attachments are mostly PDF-format assessment reports and credit documents.
Constraints imposed by these characteristics on HTTP interfaces and external systems
The mixed structure of financial leasing due diligence data requires HTTP interfaces to support both form parameter submission and file stream upload, to enable synchronized transmission of structured fields and attachments. Third-party data from multiple sources uses different authentication rules, so multiple independent sets of authentication parameters must be configured. The data independence of individual projects requires interfaces to support pulling or synchronizing data using a unique project identifier, to prevent data mixing across projects. Large-volume attachment files require adjustments to interface upload limits and timeout thresholds, to accommodate the transmission needs of standard due diligence attachments.
Configuration Settings
| Configuration Item | Recommended Value | Rationale |
|---|---|---|
EXTERNAL_API_AUTH_TYPE | api_key + hmac_sign | Financial leasing due diligence involves third-party data sources that mostly require dual authentication to secure data transmission |
UPLOAD_FILE_MAX_SIZE | 600 MB | File sizes such as leased asset assessment reports and corporate credit attachments are typically larger than standard documents, requiring support for large-file transmission |
PARSE_EXTERNAL_TIMEOUT | 180 seconds | Response delays for third-party credit and business interfaces are generally longer than standard interfaces, to avoid request timeout interruptions |
EXTERNAL_SYNC_IDENTIFIER | project_contract_id | Each financial leasing project uses the contract ID as its unique identifier, enabling accurate matching and data synchronization |
HTTP_RETRY_MAX_TIMES | 2 times | Occasional network fluctuations affect third-party interfaces. Limited retries improve call success rates, while excessive retries increase interface costs |
API_COMPATIBLE_MODE | Enabled | Compatibility is required for some third-party models that use OpenAI-format interfaces, to adapt to standardized call workflows |
The parameter values provided on this page are common recommended starting points for configuration. Actual values are affected by material format, data volume, and business rules. Specific issues require case-by-case analysis. It is recommended to test on your own samples before finalizing settings.
Three Common Configuration Mistakes
- An HTTP call to an OpenAI-compatible interface returns a
405 Method Not Allowedstatus code. This occurs when the interface request method is not configured to match the POST method required by the third-party model, or an incorrect authentication mode is enabled. - When building an intelligent agent to call the interface for file upload, attachments cannot be synchronized to the due diligence report. This occurs when the
UPLOAD_FILE_MAX_SIZEparameter is not configured correctly, or form support for file stream upload is not enabled. - Rate limits are triggered when using a single API key for calls, and multi-key configurations do not take effect. This occurs when load balancing-related parameters are not configured correctly, or multi-key allocation by project is not implemented.
How to Confirm Correct Configuration
- Initiate a mock interface call for a financial leasing project, and check if the returned structured fields match the preset due diligence fields.
- Upload a large leased asset assessment report, and confirm that no upload limit error is triggered by the interface.
- Configure multiple sets of API keys and initiate high-frequency calls, and check if the interface allocates keys according to preset rules.
- Review interface logs, confirm that the request method matches the requirements of the third-party interface, and that no
405 Method Not Allowedor similar abnormal status codes appear.
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.