How To Fix PPEENG170 - Label for &1 &2 contains invalid character '&3'

SAP Error Message - Details

• Message type: E = Error

• Message class: PPEENG - iPPE Engine Messages

• Message number: 170

• Message text: Label for &1 &2 contains invalid character '&3'

What causes this issue?

The description contains an invalid character. Valid characters include
numbers from 0 to 9, letters from A to Z, and the underscore '_'.

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?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message PPEENG170 - Label for &1 &2 contains invalid character '&3' ?

  The SAP error message PPEENG170 indicates that there is an issue with a label in the system that contains an invalid character. This error typically arises in the context of production planning or engineering, where labels for materials, operations, or other entities are defined.
  Cause:
  The error is triggered when a label (such as a material number, operation name, or similar identifier) contains a character that is not allowed by the system. The invalid character is represented by &3 in the error message, while &1 and &2 represent the specific entities (like material or operation) that are being referenced.
  Common Causes:
  
  Special Characters: The label may contain special characters (e.g., &, %, $, #) that are not permitted.
  Length Restrictions: The label may exceed the maximum length allowed for that field.
  Incorrect Formatting: The label may not adhere to the expected format (e.g., numeric vs. alphanumeric).
  
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Identify the Invalid Character: Check the label for the specific entity mentioned in the error message. Look for the character indicated by &3.
  
  
  Modify the Label: 
  
  Remove or replace the invalid character with a valid one.
  Ensure that the label adheres to the naming conventions and restrictions defined in your SAP system.
  
  
  
  Check Length and Format: Ensure that the label does not exceed the maximum length and follows the required format.
  
  
  Test Changes: After making the necessary changes, try to save or process the entity again to see if the error persists.
  
  
  Consult Documentation: If you are unsure about the allowed characters or formats, refer to the SAP documentation or consult with your SAP administrator.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific guidance or updates related to this error message.
  Transaction Codes: You may need to use transaction codes like SE11 (Data Dictionary) or SE37 (Function Builder) to investigate the data definitions and constraints.
  User Exits or BAdIs: If the error is occurring in a custom development, check for any user exits or BAdIs that might be affecting the label generation.
  
  By following these steps, you should be able to identify and correct the issue causing the PPEENG170 error in your SAP system.