What Data for This Category Looks Like
Data sources for property management intelligent due diligence reports include property project filing documents, daily operation and maintenance ledgers, public facility maintenance records, property fee collection records, and owner meeting resolution documents, among others. Update cadence varies: project basic filing materials are updated when a project is delivered or undergoes major changes; operation and maintenance documents are updated monthly or quarterly; expense documents are generated monthly. Most documents are multi-page PDFs, with fixed chapter modules, interspersed with structured tables, scanned image blocks, and plain text operation and maintenance logs. Fields include facility number, maintenance cycle, collection amount, repair times, and more. Units involve yuan, calendar days, quarters, and others. Some documents contain both scanned images and editable text content.
What Constraints Do These Characteristics Impose on the Document Parsing and Chunking Link
Mixed multi-source document formats require the parsing process to balance OCR recognition and structured table extraction, and cannot rely solely on plain text parsing logic. Fixed chapters and interspersed unstructured blocks require chunking logic to preserve chapter integrity, and avoid splitting independent content units such as tables and operation and maintenance logs. Diverse field and unit combinations require chunking to retain the association between fields and their corresponding units, and avoid information loss after splitting. Multiple ledger documents uploaded in batches require chunking logic to distinguish the boundaries of different documents, and avoid merging content across documents. Some documents also have repeated headers and footers. These must be removed during the parsing stage to prevent invalid information from being mixed into chunking results.
Configuration Settings
| Configuration Item | Recommended Value | Rationale for This Value |
|---|---|---|
PARSE_PDF_USE_MARKER | Enabled | Property management documents often contain scanned tables and complex layouts; Marker can optimize structured extraction and OCR recognition effects |
UPLOAD_FILE_MAX_SIZE | 2000 MB | Single due diligence reports often contain years of operation and maintenance ledgers, resulting in large single-file sizes; this value covers most scenarios |
SEGMENT_MAX_LENGTH | 800–1200 characters | Due diligence reports contain long-form operation and maintenance records and compact tables; this range balances context integrity and chunk granularity |
CUSTOM_SEGMENT_DELIMITER | , Chapter [0-9]+, Article [0-9]+ | Due diligence reports have fixed chapter and clause structures; this delimiter accurately identifies natural paragraph and chapter boundaries |
PARSE_FILE_TIMEOUT_SECONDS | 600 seconds | Parsing large multi-page PDFs requires longer processing time; this value prevents mid-process interruptions |
OCR_ENABLED | Enabled | Some documents are in scanned format, requiring OCR to extract text content |
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, and it is recommended to test on your own samples before finalizing settings.
Three Common Mistakes
- Symptom: An error occurs when processing PDFs after deploying Marker, with a response containing
{"detail":"Error message"}. Cause: Environment variables required by Marker are not properly configured, or the deployed Marker version is incompatible with the current FastGPT v4.8.17 version. - Symptom: After setting a custom line break as the chunking rule, adjusting the chunk length still results in multiple paragraphs being merged or single paragraphs being split. Cause: The custom delimiter does not cover the fixed chapter title format of the due diligence report, causing the chunking logic to fail to identify natural paragraph boundaries.
- Symptom: Uploading a large due diligence report PDF triggers an upload failure. Cause: The
UPLOAD_FILE_MAX_SIZEparameter is not adjusted to a value matching the file size, or the server's temporary storage quota is insufficient.
How to Confirm Proper Configuration
- Upload a test PDF containing scanned tables and plain text operation and maintenance logs, and check whether the parsed text fully extracts table content and log text.
- Adjust the
SEGMENT_MAX_LENGTHparameter, then manually review the chunking results to confirm that chapter titles and corresponding content are not split or merged. - Upload multiple test files of different formats to verify that the upload and parsing process does not trigger timeouts or errors.
- Review the parsing logs to confirm that the OCR or Marker modules have been enabled normally, with no unhandled file format warnings.
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.