diff --git a/lstV2/server/services/ocp/controller/materials/mainMaterial.ts b/lstV2/server/services/ocp/controller/materials/mainMaterial.ts
index 29a162d..7a5a909 100644
--- a/lstV2/server/services/ocp/controller/materials/mainMaterial.ts
+++ b/lstV2/server/services/ocp/controller/materials/mainMaterial.ts
@@ -20,6 +20,12 @@ export const isMainMatStaged = async (lot: any) => {
 	const machine = data.data.filter(
 		(m: any) => m.HumanReadableId === lot.machineID,
 	);
+
+	// just in case we encounter an issue with the machines
+	if (machine.length === 0) {
+		createLog("error", "mainMaterial", "ocp", "Invalid machine passed over.");
+		return false;
+	}
 	// we have a check on ksc side to ignore the tetra machine for now as its not updating in 2.0
 	if (!machine[0].StagingMainMaterialMandatory) {
 		createLog(