What this category of data looks like
Data sources for vehicle financing daily reports include daily operation ledgers exported by automotive company finance departments, aggregated loan receipts from partner banks, and in-transit data from logistics service providers. Complete daily reports for the previous day are generated every early morning. Most documents are Excel files with fixed headers or structured PDFs. Fields included in the documents are batch number, vehicle identification number, full dealer name, financing amount (unit: ten thousand yuan), loan date, repayment deadline, current financing status. Some documents contain embedded scanned delivery orders for corresponding vehicles.
What constraints do these characteristics impose on document parsing and chunking
This type of data imposes multiple constraints on document parsing and chunking. Single daily report documents have a large number of rows. Fixed-length chunking can split information for the same batch of vehicle financing, so grouping by business logic is required instead of splitting solely by character length. Some documents include embedded scanned vehicle delivery orders, so both OCR text and structured fields must be extracted to avoid disconnects between financing information and vehicle vouchers. Fields include unique identifiers such as vehicle identification number, so field association must be retained during chunking to prevent critical information from being split across chunks. The high-frequency daily update requirement means the parsing process must support batch document processing to avoid timeout interruptions.
How to Configure
| Configuration Item | Recommended Value | Rationale |
|---|---|---|
chunk_size | 600–1000 characters | Matches the text length of single-batch vehicle financing information to avoid splitting the same business group |
chunk_overlap | 50–80 characters | Retains context associated across batches to prevent key fields from being truncated |
PARSE_ENABLE_OCR | Enabled | Processes embedded scanned vehicle delivery order documents, extracts OCR text and associates it with structured fields |
PARSE_STRUCTURE_MODE | excel mode | Matches the fixed header format of daily reports, automatically identifies structured fields to avoid repeated parsing of headers |
MAX_PARSE_ROWS_PER_DOC | 2000 | Adapts to the maximum row limit for a single daily report to avoid parsing timeouts |
PARSE_TIMEOUT | 120 seconds | Addresses parsing time for large daily reports to prevent mid-process interruptions |
The parameter values provided on this page are common starting points for configuration. Actual values are affected by material format, data volume and business rules. Specific issues require individual analysis. It is recommended to test on your own samples before finalizing values.
Three Common Errors
- Scenario: When calling the document parsing API of version v4.8.13 with a daily report link, the returned result only contains headers and no specific vehicle financing data. Cause: The
excelmode ofPARSE_STRUCTURE_MODEis not enabled. The tool uses plain text parsing by default and cannot recognize row data from structured tables. - Scenario: The chunk ID field on the knowledge base detail page cannot be extracted by clicking or using copy shortcuts. Cause: The page sets chunk ID as non-interactive text by default, and the front-end copyable configuration is not enabled.
- Scenario: After custom-split document chunks are stored in the knowledge base, duplicate batch information is automatically deleted, resulting in disordered custom index order. Cause: The automatic deduplication function of the knowledge base is not disabled. The tool deletes duplicate chunks based on text similarity or field unique identifiers.
How to Confirm Proper Configuration
- Upload a single-batch test daily report document, view the parsed text chunks, and confirm that vehicle financing information for the same dealer is not split across chunks.
- Open the details page of the parsing result, confirm that OCR text from embedded vehicle delivery order scans has been extracted and associated with the corresponding structured field chunk.
- Access the chunk management page of the knowledge base, attempt to copy any chunk ID, and confirm that the text content can be extracted normally.
- Upload a test daily report with more than 2000 rows, confirm that the parsing task is not interrupted due to exceeding the row limit.
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.