HTTP Interfaces and External Systems for Coatings and Inks

What this category’s data looks like

Data for coatings and inks intelligent due diligence reports primarily comes from public chemical raw material databases, batch quality inspection reports from manufacturing enterprises, and compliance statistics from industry associations. Update frequencies vary: raw material quotation data updates daily, batch quality inspection reports generate alongside production batches, and industry compliance standards update quarterly. Report documents use structured table formatting. Core fields and their units include: raw material name, CAS registry number, production batch number, VOC emission limit (unit: g/L), artificial weathering resistance time (unit: hours), applicable national standard number, and supplier quotation range (unit: yuan/kilogram).

Constraints for HTTP Interfaces and External Systems

The structured format with multiple fields carrying specific units requires interfaces to support unit inclusion and formatting. External systems cannot correctly parse field meanings without this support. Differences in update frequencies across data types require interfaces to support both scheduled synchronization and on-demand pull modes. These modes accommodate daily updated quotation data and on-demand batch reports respectively. Fields that require exact matching (such as CAS numbers and national standard numbers) require interfaces to support exact query parameters. This prevents the return of irrelevant data. The structured JSON return format requires interfaces to exclude unstructured text blocks. External systems cannot complete automated parsing otherwise. These constraints directly impact interface request parameter configuration and external system docking logic. Adapted pull rules and query parameters must be set for each data type.

Configuration Settings

Configuration Item	Recommended Setting	Rationale
`api_request_timeout`	`300 seconds`	Coatings and inks due diligence reports include multiple batches of quality inspection data. Sufficient time is required for data aggregation during interface pulling to avoid timeout interruptions
`return_field_unit`	`Mandatory inclusion`	Core fields of coatings and inks reports (such as VOC, weathering resistance time) have clear units. External systems need unified unit formats for display and calculation
`batch_query_trigger`	`Trigger by production batch number`	Quality inspection data for coatings and inks is updated by production batch. Querying by batch can accurately obtain target reports and avoid pulling redundant data
`filter_compliance_standard`	`Filter by national standard number`	Coatings and inks due diligence must meet specific compliance requirements. Filtering directly returns report data that meets target standards
`max_return_batch_count`	`10 entries`	A single due diligence usually only requires recent 10 batches of report data. Excessive returns increase the parsing burden on external systems
`api_auth_token`	`Bound by external system ID`	Different external systems require independent authentication tokens to avoid cross-system data leakage

The parameter values provided on this page are common recommended starting points for configuration. Actual values are affected by material form, 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 Errors

Missing or unrenderable form fields after an external system calls the interface. The cause is that the return_field_unit parameter is not configured. This causes the fields returned by the interface to carry no unit information, and external systems cannot recognize field formats.
No context retained after calling a workflow interface. The cause is that the workflow_context_enable configuration item is not enabled, and the conversation_id parameter is not carried in the request header.
Interface returns 504 Gateway Timeout error. The cause is that the api_request_timeout parameter is not adjusted. The time required for multi-batch data aggregation for coatings and inks exceeds the default timeout period.

How to Verify Correct Configuration

Send a test request. Check if the returned JSON fields include all required coatings and inks related fields (such as CAS number, VOC value) and their corresponding units.
Initiate a query by production batch number. Verify that the returned report data matches the quality inspection results of the specified batch.
Initiate a workflow interface request with conversation_id. Verify that context information is retained across two consecutive requests.
Check the status code returned by the interface. Confirm that no 504 timeout error occurs, and the number of returned data entries does not exceed the configured max_return_batch_count.

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.