diff --git a/common.yml b/common.yml
index fb4e2ed..be2b661 100644
--- a/common.yml
+++ b/common.yml
@@ -525,6 +525,16 @@ components:
           description: "The maximum allowable part of the area occupied by the glare. The same: 0.06 = 6%"
           example: 0.0
 
+    OcclusionCheckParams:
+      title: "OcclusionCheckParams"
+      type: object
+      properties:
+        maxOcclusionPart:
+          type: number
+          format: float
+          description: "The maximum size for the occluded area of a document; only those exceeding this size will be validated"
+          example: 0.01
+
     MDLDeviceEngagement:
       title: "MDLDeviceEngagement"
       type: integer
diff --git a/p-process.yml b/p-process.yml
index 494e5d7..49432ef 100644
--- a/p-process.yml
+++ b/p-process.yml
@@ -759,6 +759,8 @@ components:
             $ref: "./rt-image-quality.yml#/components/schemas/InputImageQualityChecks"
         glaresCheckParams:
           $ref: "./common.yml#/components/schemas/GlaresCheckParams"
+        occlusionCheckParams:
+          $ref: "./common.yml#/components/schemas/OcclusionCheckParams"
 
     ProcessRequestImage:
       title: "ProcessRequestImage"