Finance and Procurement
Artificial Intelligence and Automation

Engineering an AI-Powered Platform for Invoice and GRN Reconciliation

A procurement-focused enterprise struggled with time-consuming and error-prone manual reconciliation across Invoices, Purchase Orders, and Goods Receipt Notes spanning multiple formats and data sources. To resolve this, an AI-powered reconciliation platform was built using LLMs, multi-database architecture, and automated validation workflows, compressing reconciliation cycles and improving financial accuracy.
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Challenge
Solution
The Outcome

The Challenge

The enterprise needed an intelligent system to reconcile high volumes of procurement documents across inconsistent formats without relying on manual verification workflows.

Unstructured and Fragmented Document Formats

‍Invoices existed across PDFs, scanned documents, and structured records with no standardized extraction mechanism. Traditional rule-based systems could not accurately interpret this variation.

Manual Discrepancy Detection at Scale

‍Finance teams were manually comparing invoice fields against PO and GRN records to catch mismatches in quantities, pricing, and supplier details. This process was slow, error-prone, and created downstream delays in payment approvals and financial reporting.

The Solution

We engineered a full-stack AI reconciliation platform to automate document extraction, intelligent matching, and discrepancy detection across procurement data sources.

AI-Driven Invoice Data Extraction

‍LLM functions via AWS Bedrock were connected to extract key fields, including invoice numbers, supplier details, quantities, and pricing, from PDFs, scanned documents, and structured records.

Intelligent Document Matching

‍Extracted invoice data was automatically compared against corresponding Purchase Orders and Goods Receipt Notes to validate transaction accuracy across procurement records.

Automated Discrepancy Detection

‍The platform identified quantity differences, pricing inconsistencies, missing line items, and incorrect supplier information, flagging them directly for finance team review.

Multi-Database Data Processing

‍MongoDB was used for flexible document storage while PostgreSQL handled structured transactional data, supporting efficient validation across both data layers.

Reconciliation Workflow Orchestration

‍A Flask-based application managed document ingestion, validation pipelines, and reporting, giving finance teams a centralized interface for end-to-end reconciliation management.

The Outcome

The enterprise now processes procurement reconciliations through a fully automated AI platform that removes manual document comparison and speeds up financial validation. Intelligent extraction and matching have reduced reconciliation delays and improved accuracy across payment workflows.

80% Reduction in Manual Reconciliation Effort by automating invoice extraction, PO matching, and GRN validation, freeing finance teams to attend only to flagged discrepancies.

Multi-Format Document Coverage achieved across PDFs, scanned documents, and structured records through LLM-powered extraction via AWS Bedrock with consistent field-level accuracy.

2X Faster Payment Processing supported by automated discrepancy detection and faster approval workflows, reducing delays caused by manual verification across procurement cycles.

We have been working with Entrans for the last two years and they have played a key role in building our solution. Their expertise and professionalism were evident throughout the development cycle, and we were very pleased with the final product. They have shown enormous skill and vast domain knowledge and their IT expertise is reliable and trustworthy. We would recommend Entrans for anyone looking for quality IT services, delivered in a professional manner
Nikolay Prokopiev
Chief Executive Officer
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