How To Fix 5A442 - Only schedule class 1 allowed when days/hours are entered explicitly ->F1

5A442 - Overview

• Message type: E = Error

• Message class: 5A - Basis Personnel Management

• Message number: 442

• Message text: Only schedule class 1 allowed when days/hours are entered explicitly ->F1

What causes this issue?

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.

Error message extract from SAP system. Copyright SAP SE.

5A442 - Details

• The SAP error message 5A442 indicates that there is a restriction on the scheduling class being used in a particular context. Specifically, it states that "Only schedule class 1 allowed when days/hours are entered explicitly." This typically occurs in the context of scheduling jobs or tasks in SAP, particularly when using the background processing functionality.
  
  Cause:
  The error arises when you attempt to schedule a job with explicit days or hours specified, but the scheduling class you are using does not permit this. In SAP, scheduling classes define how jobs are processed and can have specific rules regarding the input of time parameters. Schedule class 1 is generally the only class that allows for explicit time entries.
  
  Solution:
  To resolve this error, you should take the following steps:
  
  
  Check the Scheduling Class: Ensure that you are using schedule class 1 if you are entering explicit days or hours. You can do this by reviewing the