How To Fix TR109 - Single character / is not permitted

TR109 - Overview

• Message type: E = Error

• Message class: TR - Change and Transport System

• Message number: 109

• Message text: Single character / is not permitted

What causes this issue?

Only replacement characters //, /*, /&, /C and /L are allowed in the
field <LS>Object name</>. However, you entered a single <LB>/</>
character.

System Response

Entry rejected.

How to fix this error?

Enter one of the following combinations of characters as the
replacement combination:
<LB>// /* /& /C /L</>

Error message extract from SAP system. Copyright SAP SE.

TR109 - Details

• The SAP error message TR109, which states "Single character / is not permitted," typically occurs in the context of transaction codes or when dealing with certain fields that do not accept single-character inputs. This error can arise in various scenarios, such as when entering transaction codes, defining custom fields, or working with certain configuration settings.
  
  Cause:
  
  Invalid Input: The most common cause of this error is that a user has entered a single character (in this case, a forward slash /) in a field that does not accept it. This could happen in transaction codes, field names, or other identifiers.
  Field Restrictions: Certain fields in SAP have restrictions on the type of characters that can be entered. A single character like / may not be allowed due to these restrictions.
  
  
  Solution:
  
  Check Input: Review the input field where the error occurred. Ensure that you are not entering a single character / or any other invalid