How To Fix TR109 - Single character / is not permitted

SAP Error Message - Details

• 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.

Smart SAP Assistant

• What is the cause and solution for SAP error message TR109 - Single character / is not permitted ?

  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 character. Replace it with a valid entry.
  Use Valid Transaction Codes: If the error occurs while entering a transaction code, ensure that you are using a valid transaction code that conforms to SAP's naming conventions.
  Field Configuration: If you are working with custom fields or configurations, check the field definitions to ensure that they allow the characters you are trying to use.
  Consult Documentation: Refer to SAP documentation or help resources for the specific module or area you are working in to understand the valid inputs for that context.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or updates related to this error message. Sometimes, SAP releases patches or notes that address specific error messages.
  Transaction Codes: Familiarize yourself with the valid transaction codes in your SAP environment. You can use transaction code SE93 to view and manage transaction codes.
  Field Validation: If you are a developer or administrator, review the validation rules for the fields in question. This may involve looking at the data dictionary (SE11) or the relevant configuration settings.
  
  If the issue persists after checking the above points, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.