How To Fix DO186 - Lowercase letters are switched on (are defined for &)

SAP Error Message - Details

• Message type: E = Error

• Message class: DO - Dictionary: Mass activation of domains and data elements

• Message number: 186

• Message text: Lowercase letters are switched on (are defined for &)

What causes this issue?

The 'lowercase' flag has a fixed definition of 'lowercase allowed' for
the specified data type. The setting which is set, namely 'lowercase
not allowed' is therefore automatically corrected.
The 'lowercase' flag defines whether uppercase and lowercase should be
distinguished for the set of values. If this flag is set, uppercase and
lowercase are distinguished. Otherwise all the letters which are
entered are converted to uppercase. The 'lowercase' flag is only
meaningful for character-like data types.

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?

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message DO186 - Lowercase letters are switched on (are defined for &) ?

  The SAP error message DO186 indicates that lowercase letters are enabled for a specific object or configuration, which is not allowed in certain contexts within the SAP system. This error typically arises when you are trying to create or modify an object (like a table, field, or program) that does not support lowercase letters.
  Cause:
  
  Lowercase Letters Enabled: The system is configured to allow lowercase letters, but the specific object or context does not support them.
  Naming Conventions: SAP has specific naming conventions for various objects, and using lowercase letters may violate these conventions.
  System Settings: The system settings or profile parameters may be configured to allow lowercase letters, but the specific transaction or object does not accept them.
  
  Solution:
  
  Check Naming Conventions: Ensure that the names of the objects you are trying to create or modify adhere to SAP's naming conventions, which typically require uppercase letters.
  Disable Lowercase Letters: If you are in a development environment, you may need to adjust the settings to disable lowercase letters. This can usually be done in the system profile or configuration settings.
  Use Uppercase Letters: Modify the names of the objects to use only uppercase letters, as this is generally the accepted practice in SAP.
  Consult Documentation: Refer to the SAP documentation or help resources for specific guidelines on naming conventions and object creation.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional context or solutions for this error.
  Transaction Codes: Familiarize yourself with transaction codes related to object creation and modification, such as SE11 (Data Dictionary), SE80 (Object Navigator), etc.
  System Configuration: Review the system configuration settings related to naming conventions and object definitions.
  
  If the issue persists after following these steps, consider reaching out to your SAP Basis or development team for further assistance, as they may have more insights into the specific configuration of your SAP environment.