2745861 - Syntax error in program "CL_SOMO_SMUD_READ: the obligatory parameter "IV_SITE_ID" had no value assigned to it

In Solution Manager you get the following dump:

Category ABAP Programming Error
Runtime Errors SYNTAX_ERROR
ABAP Program CL_SOMO_SMUD_READ=============
Application Component SV-SMG-MON-BPM-MON

Error in the ABAP Application Program

The current ABAP program "CL_SOMO_API===================CP" had to be
terminated because it has
come across a statement that unfortunately cannot be executed.
In include "CL_SOMO_SMUD_READ=============CM00P ", in line 21 of program
"CL_SOMO_SMUD_READ=============CP ", the following syntax errors
have occurred:
The obligatory parameter "IV_SITE_ID" had no value assigned to it.

Solution Manager 7.2

KBA , SV-SMG-MON-BPM-MON , Monitoring , Problem