In enterprise applications, document information extraction (IE) does not operate in isolation: extracted information must match the systems of record (SoR) for the process to work. While reliable IE demands entity extraction, SoR grounding, and iterative refinement, existing methods rely on single-pass inference. To address this gap, we propose a SoR-grounded agentic pipeline and evaluate four agentic paradigms (Agentic Workflow, ReAct, Plan-Execute-Critic, and Dynamic Agent Collaboration) on real-world enterprise data. We focus on the goods receipt and invoice settlement processes as representative use cases, where delivery notes and invoices must be matched and verified against purchase order SoR. Our results show that agentic approaches generally match or exceed non-agentic baselines, with simpler paradigms matching or outperforming complex alternatives. Paired with systematic error analysis, this work provides actionable guidance for deploying agentic document AI at enterprise scale.