We examine what plan validation and execution reports establish in natural-language robot fleet control. Commands are traced through typed plans, deterministic corrections, fleet coordination and outcome checks in a three-level Robot Operating System 2 implementation with twenty simulated robots. An offline benchmark of 44 cases checks plan structure and selected command requirements. Across five local configurations without a response schema, 70.0-87.3% of responses pass. All runs in a selected 18-run simulation series meet their pose-based task conditions. This series includes two successful repeats that replaced incomplete runs after a software change. Saved plans and logs document duplicate pickup assignments and goal adjustments within the original task zones. Separate formation traces show a structurally accepted plan with the wrong formation shape and a rejected route, and an arrival report that omitted a requested robot after replanning. Carry completion records pickup and subsequent drop-off zone presence for the same robot. The cases distinguish changes to executable actions from changes to the requirements covered by a completion report. They motivate checking the effective assignments, goals and reported outcome against the original command.