diff --git a/src/schema/rules/files/raw/fmap.yaml b/src/schema/rules/files/raw/fmap.yaml
index 94b03f7f6f..056ed1d67e 100644
--- a/src/schema/rules/files/raw/fmap.yaml
+++ b/src/schema/rules/files/raw/fmap.yaml
@@ -38,6 +38,7 @@ pepolar:
     ceagent: optional
     direction: required
     run: optional
+    part: optional
     chunk: optional
 
 TB1DAM: