LLM Architecture for ERP Query Translation
The NLP-to-ERP query pipeline uses a fine-tuned LLM that understands ERP schema semantics—not just table structures, but the business meaning of fields, relationships between entities, and common query patterns. The architecture includes a schema-aware prompt layer that provides the LLM with ERP metadata (table descriptions, field glossaries, join paths), a query generation layer that produces SQL or API calls, and a validation layer that checks generated queries against security rules before execution.
- Fine-tune GPT-4 or Llama 3 on ERP-specific query pairs: natural language question → validated SQL/API call
- Build schema metadata layer with business-friendly descriptions: 'CUNO' becomes 'Customer Number', 'ORDT' becomes 'Order Date'
- Implement query validation: check column-level security, row-level access, and data sensitivity classification before execution
- Use RAG (Retrieval-Augmented Generation) to inject relevant ERP documentation and query examples into the LLM context
- Cache common query patterns with parameterized templates for sub-second response on frequently asked questions
Conversational Context and Multi-Turn Queries
Real ERP queries are rarely single-shot. Users start with a broad question ('Show me last month's sales'), then drill down ('Break that down by region'), then filter ('Just show the Midwest above $50K'), then pivot ('Now compare that to the same period last year'). The NL interface maintains conversational context across turns, building incrementally on previous queries.
This multi-turn capability transforms the interface from a query tool into an analytical conversation partner.
- Maintain conversation context window of 10-15 turns with entity tracking (dates, filters, dimensions) across messages
- Support drill-down patterns: 'Show me more detail on the third row' resolves references using previous result context
- Handle ambiguity with clarification prompts: 'By revenue, do you mean gross revenue or net revenue after returns?'
- Enable comparative queries: 'vs. last year', 'compared to budget', 'relative to industry average' with automatic joins
- Provide query explanation: show the generated SQL/API call in plain English so users understand what was actually queried
Security, Governance, and Deployment Patterns
NL ERP interfaces must enforce the same security model as the ERP itself. Users can only query data they are authorized to access—the NL layer maps ERP user roles to query permissions, filtering results by company, division, and data sensitivity level. Audit logging captures every query, the generated SQL, and the returned result set for compliance.
Deployment options range from embedded ERP chatbots to Slack/Teams integrations and voice interfaces.
- Map ERP user roles to NL query permissions: sales users see customer/order data, finance sees GL/AP/AR data
- Implement PII/sensitive data masking: redact SSN, bank account, and salary fields from NL query results automatically
- Audit log every query: user, natural language input, generated SQL, execution time, and row count returned
- Deploy via Slack/Teams bot integration for zero-friction access without logging into the ERP system
- Expected adoption: 3x increase in ERP data utilization within 6 months, 70% reduction in ad-hoc report IT tickets
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Text-to-SQL Guardrails Checklist for ERP Data
Check that an LLM that writes SQL over your ERP is limited by database permissions, query validation, cost limits and audit trails.
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