What data in this category looks like
Most data for financial leasing daily financing reports comes from exports of business management systems, rental recovery ledgers, bank loan receipts and rental arrival vouchers. Update frequency is mostly daily, with some weekly or monthly summaries. Document formats are primarily Excel, with a small number of PDF summary reports. Core fields include lease contract number, lessee entity name, outstanding financing principal, current rental amount, due repayment date, and overdue penalty interest rate. Amount units are mostly RMB yuan or ten thousand yuan. Rates use percentage units.
What constraints do these characteristics impose on document parsing and chunking?
Excel daily reports contain tens of thousands of rows of detailed data and multi-level headers. Parsing requires accurate identification of merged cells and cross-row/column header associations to avoid field misalignment. High-frequency daily updates require the parsing process to have low latency to prevent batch processing timeouts. Document formats vary across sources. Some PDF reports mix scanned documents and editable text, so multi-modal parsing must be supported. For long documents, chunking must retain cross-page field association information. For example, multi-page details for the same lease contract must not be incorrectly split.
How to set configurations
| Configuration Item | Recommended Setting | Rationale |
|---|---|---|
PARSE_EXCEL_MERGE_CELL_MODE | Preserve merged cell structure | Financial leasing daily reports have extensive cross-row/column header and detail associations. The original table hierarchy must be retained. |
maxChunkSize | 800–1200 characters | Daily report fields mostly combine short text and values. This range balances context completeness and chunk granularity. |
UPLOAD_FILE_MAX_SIZE | 2000 MB | Single annual summary reports can reach hundreds of pages. Large file upload support is required. |
PARSE_FILE_TIMEOUT_SECONDS | 300 seconds | Sufficient parsing time must be reserved when batch processing multiple daily reports. |
RAG_CHUNK_OVERLAP | 100–150 characters | Context continuity must be retained for cross-chunk associated fields such as lease contract numbers. |
ENABLE_OCR_FOR_PDF | Enabled | Some daily report PDFs use scanned document format. OCR is required to extract text content. |
The parameter values provided on this page are conventional recommendations used as a starting point 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 errors
- Incorrect format error messages are returned after parsing Excel documents, or core fields are empty. Cause: The Excel merged cell recognition mode is not configured, causing multi-level headers to be incorrectly split.
- Knowledge base matching results contain a large number of irrelevant non-current rental details, and the number of results exceeds expectations. Cause: The
maxChunkSizeparameter is not adjusted, and the chunk length exceeds a reasonable range, resulting in overly coarse granularity. - Timeout errors are triggered when parsing PDF daily reports with more than 500 pages. Cause: The
PARSE_FILE_TIMEOUT_SECONDSparameter is not adjusted, and the default duration is insufficient to complete large file parsing.
How to confirm the configuration is correct
- A single Excel daily report containing merged cells is uploaded. The parsed field mapping is checked to confirm it matches the original header, with no misalignment or missing fields.
- Chunking results are generated. Cross-page lease contract details are randomly selected to confirm that chunks do not split associated data from the same contract.
- A PDF report with more than 500 pages is uploaded. No timeout error is triggered for the parsing task.
- Multiple daily reports in different formats are batch uploaded. The completion rate of the parsing process is checked to confirm it remains stable.
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.