How To Fix BC056 - Only one dominant can be defined per day

BC056 - Overview

• Message type: E = Error

• Message class: BC - Scheduler (calendar)

• Message number: 056

• Message text: Only one dominant can be defined per day

What causes this issue?

You have attempted to maintain a dominant for &V1&, but a dominant
already exists for this day.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Check the selected date.
Correct the date, or change or delete the dominant of the specified
day, as appropriate.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message BC056 - Only one dominant can be defined per day ?

  The SAP error message BC056 "Only one dominant can be defined per day" typically occurs in the context of defining dominant personnel assignments or roles within the SAP system, particularly in modules related to Human Resources (HR) or Organizational Management (OM). This error indicates that the system has detected an attempt to assign multiple dominant roles or positions to a single employee for the same day, which is not allowed.
  
  Cause:
  
  Multiple Assignments: The primary cause of this error is that there are multiple dominant assignments (e.g., positions, roles) being defined for the same employee on the same date.
  Data Entry Error: It may arise from incorrect data entry or configuration in the system where the same employee is mistakenly assigned to more than one dominant role for a single day.
  System Configuration: The system may be configured to allow only one dominant role per employee per day, which is a common practice to