HTTP Interfaces and External Systems for Expense List

What This Category of Data Looks Like

Expense list data originates from partner hospital billing systems, medical insurance settlement platforms, and internal claim verification systems of insurance companies. Updates are triggered by claim applications. Synchronization usually completes within 1 to 5 minutes after a user submits claim materials. Most documents use structured table formats. Fields include charge item name, unit price, quantity, total price, medical insurance catalog code, charging department, charging date, and more. Unit price is measured in yuan per service item. Quantity is measured in times or pieces. Total price is measured in yuan. Some entries include medical insurance reimbursement ratio annotations.

Constraints Imposed on HTTP Interfaces and External Systems

The multi-source data nature of expense lists requires HTTP interfaces to support integration with multiple external systems. Interfaces must be compatible with JSON, CSV, or structured HTML formats returned by different systems. Real-time synchronization requirements demand interface configurations with low-latency timeout thresholds. This avoids extending the claim initial review cycle. Structured field requirements mean interfaces must pre-set field validation rules. These rules validate the medical insurance catalog code and numeric fields such as unit price and quantity for compliance. Interfaces must also support extracting core data required for claim review based on specified fields. Some entries include medical insurance reimbursement ratio annotations, so interfaces must support parsing non-standard additional fields.

Configuration Settings

Configuration Item	Recommended Value	Rationale
`PARSE_FILE_TIMEOUT_SECONDS`	`300 seconds`	Expense lists are structured short documents. 300 seconds covers most network latency and parsing delay scenarios
`UPLOAD_FILE_MAX_SIZE`	`10 MB`	Single PDF or image files of expense lists typically do not exceed 5 MB. A reasonable buffer is reserved to prevent upload failures
`HTTP_PLUGIN_PROXY_ENABLE`	`Enabled`	Some hospital billing systems are deployed on internal networks. A proxy is required to access external interfaces
`REQUIRED_EXTRACT_FIELDS`	`Project Name, Unit Price, Quantity, Total Price, Charge Date`	These five fields are the core review basis for insurance claim initial review. Compliance verification cannot be completed if any are missing
`API_RETRY_MAX_TIMES`	`2 times`	External systems may experience occasional network fluctuations. Retrying twice improves interface call success rates without excessive resource usage
`BASE64_FILE_UPLOAD`	`Enabled`	Adapts to external billing system interfaces that only support Base64 format file transfers

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 targeted analysis. Testing against internal samples is recommended before finalizing settings.

Three Common Misconfigurations

A 400 Bad Request error is returned when an expense list image is uploaded via the HTTP interface, with a prompt indicating the parameter format is invalid. Cause: File data was not transmitted using Base64 encoding, or the BASE64_FILE_UPLOAD configuration was not enabled. The system cannot recognize the encoded data stream.
The HTTP interface of an internal hospital billing system cannot be accessed, and a Connection refused error is returned during interface calls. Cause: The HTTP_PLUGIN_PROXY_ENABLE switch was not enabled, or the HTTP_PLUGIN_PROXY_URL parameter was not configured. Access to the internal network system via proxy is not possible.
Some numeric fields in the expense list data returned by the interface are empty. Cause: The corresponding field was not configured in REQUIRED_EXTRACT_FIELDS, or the file parsing rules did not match the corresponding column in the structured table.

How to Verify Proper Configuration

A standard-format expense list image or PDF file is uploaded. The structured data returned by the interface is reviewed to confirm all fields configured in REQUIRED_EXTRACT_FIELDS were correctly extracted.
The connected external billing system interface is called in an internal network environment. Successful connectivity is checked to confirm proxy-related configurations are working correctly.
The interface is called using Base64-encoded file data. Normal completion of parsing and field extraction is checked to confirm the Base64 upload configuration is enabled.
A temporary network fluctuation in the external system is simulated. The interface is called, and retries are checked to confirm they follow the API_RETRY_MAX_TIMES configuration and the retry logic is functioning correctly.

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.