How To Fix 56166 - & is not allowed (reserved for per-diem accounting)

56166 - Overview

• Message type: E = Error

• Message class: 56 - HR TRAVEL: Messages for Trip Costs Dialog

• Message number: 166

• Message text: & is not allowed (reserved for per-diem accounting)

What causes this issue?

Trip expense type &v1& is defined as a per diem and can, therefore, not
be entered as an individual receipt.

How to fix this error?

Enter a trip expense type that can be accounted individually.

Error message extract from SAP system. Copyright SAP SE.

56166 - Details

• The SAP error message 56166 typically indicates that a certain action or transaction is not allowed because it is reserved for per-diem accounting. This error often arises in the context of travel management or expense reporting within SAP, particularly when dealing with per-diem allowances.
  
  Cause:
  The error message occurs when a user attempts to perform an action that is restricted due to the configuration of the system. Specifically, it may happen when:
  
  A user tries to enter or modify a travel expense that is not permitted under the per-diem accounting rules.
  The system is set up to only allow certain types of entries or modifications for per-diem expenses, and the action being attempted does not comply with these rules.
  
  
  Solution:
  To resolve this error, consider the following steps:
  
  
  Check Configuration Settings: Review the configuration settings in the SAP system related to travel management and per-diem accounting. Ensure that the settings align with your organization's policies and that