SAP ABAP Message Class MPLAN Message Number 248 (Serial number & for material & is invalid -> both values reset)
Hierarchy
SAP_APPL (Software Component) Logistics and Accounting
   PM-PRM-MP (Application Component) Maintenance Plans
     MPLAN_API (Package) Maintenance Plan API
Attribute
Message class MPLAN  
Short Description Messages for Maintenance Plan API    
Message Number 248  
Documentation status   3   The short text describes the object sufficiently
Authorization check Error Message      
Changed On 20130531   
Message Text
Serial number & for material & is invalid -> both values reset
History
Last changed on/by 20130531  SAP 
SAP Release Created in   700