diff --git a/docs/SO_R1_Interface.rst b/docs/SO_R1_Interface.rst
index df68005..3c0d019 100644
--- a/docs/SO_R1_Interface.rst
+++ b/docs/SO_R1_Interface.rst
@@ -1025,7 +1025,7 @@
 +-------------------+---------+-----------+--------------------------+-------------------------------------------+
 |Attribute          |Qualifier|Cardinality|Content                   |Description                                |
 +===================+=========+===========+==========================+===========================================+
-|requestId          |M        |1          |String                    |Request Id                                 |
+|requestId          |M        |1          |String                    |Request Id.                                 |
 +-------------------+---------+-----------+--------------------------+-------------------------------------------+
 |startTime          |M        |1          |request Object            |Start time.                                |
 +-------------------+---------+-----------+--------------------------+-------------------------------------------+