diff --git a/p-process.yml b/p-process.yml
index cf39cff..e2e9d24 100644
--- a/p-process.yml
+++ b/p-process.yml
@@ -199,9 +199,6 @@ components:
           type: array
           items:
             $ref: "./e-lcid.yml#/components/schemas/LCID"
-        checkLiveness:
-          description: "This parameter is used to enable document liveness check."
-          type: boolean
         lcidIgnoreFilter:
           description: "The list of LCID types to ignore during the recognition. If empty, values with all LCID types will be extracted. Narrowing down the list can reduce processing time. Empty by default."
           type: array