SAP ABAP Message Class 5A Message Number 442 (Only schedule class 1 allowed when days/hours are entered explicitly ->F1)
Hierarchy
SAP_BASIS (Software Component) SAP Basis Component
   BC-BMT-OM (Application Component) Organizational Management
     SP00 (Package) Organization and Planning
Attribute
Message class 5A  
Short Description Basis Personnel Management    
Message Number 442  
Documentation status      
Authorization check Error Message      
Changed On    
Message Text
Only schedule class 1 allowed when days/hours are entered explicitly ->F1
Help Document

Diagnosis

Schedule classes 2 and 3 require a schedule with an exact sequence of day descriptions (either a day schedule from table T770B, or a user-defined schedule using the "user-defined schedule" function) so that the exact day sequence can be reproduced in the calendar later. Specifying the business event duration in days and hours is not sufficient for schedule classes 2 and 3, but is permitted for schedule class 1.

History
Last changed on/by 20130531  SAP 
SAP Release Created in