During March 2026, Sanjesh focused on improving the stability and correctness of the ERPNext stock ledger workflow in the frappe/erpnext repository. He identified and resolved a bug in the logic determining reference document types for stock ledger entries, which previously led to misclassification and downstream errors in stock valuation and inventory reporting. By correcting the voucher_type comparison in the get_ref_doctype function, Sanjesh ensured more accurate document referencing throughout the backend. His work involved navigating the ERPNext codebase, applying targeted debugging, and conducting code reviews. The solution was implemented using Python, demonstrating backend development skills and attention to workflow accuracy.