How To Fix GS091 - You cannot create '0W' sets for field &.

SAP Error Message - Details

• Message type: E = Error

• Message class: GS - Sets

• Message number: 091

• Message text: You cannot create '0W' sets for field &.

What causes this issue?

'0W' as the beginning of a set name is reserved exclusively for basic
sets belonging to WBS elements.
These sets are designed especially to show the intervals in the WBS
elements. When the sets are imported from the WBS element's master
data, they are then broken down by the set manager into their individual
values. They can only be created as basic sets belonging to table
fields with the domain PS_POSNR, that is, for example, PRPS-PSPNR.

System Response

The set cannot be created.

How to fix this error?

If you want to create a '0W' set, the table field must contain the
domain PS_POSNR.
If you want to create a different set, the set name is not allowed to
begin with '0W'.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message GS091 - You cannot create '0W' sets for field &. ?

  The SAP error message GS091, which states "You cannot create '0W' sets for field &," typically occurs in the context of SAP's data management, particularly when dealing with characteristics and sets in the SAP BW (Business Warehouse) or SAP ERP systems. This error indicates that there is an issue with the creation of sets for a specific field, often related to the characteristics of the data model.
  Cause:
  
  Invalid Field: The field for which you are trying to create a set may not be valid for set creation. This can happen if the field is not defined correctly in the data model or if it is not a characteristic that supports set creation.
  Field Type: The field type may not be compatible with the set creation process. For example, certain fields may be restricted to specific data types or formats.
  Configuration Issues: There may be configuration issues in the SAP system that prevent the creation of sets for the specified field.
  Authorization Issues: The user may not have the necessary authorizations to create sets for the specified field.
  
  Solution:
  
  Check Field Definition: Verify the definition of the field in the data model. Ensure that it is a valid characteristic that supports set creation.
  Review Field Type: Ensure that the field type is compatible with the requirements for set creation. If necessary, consult the data model documentation or SAP help resources.
  Configuration Review: Check the configuration settings in the SAP system related to the field and set creation. Make sure that all necessary settings are correctly configured.
  User Authorizations: Ensure that the user attempting to create the set has the necessary authorizations. If not, contact your SAP security administrator to grant the required permissions.
  Consult SAP Notes: Look for any relevant SAP Notes or documentation that may address this specific error. SAP frequently updates its knowledge base with solutions to common issues.
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for more details on characteristics, sets, and data modeling.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as RSA1 (Data Warehousing Workbench) or other related transactions for managing characteristics and sets.
  
  If the issue persists after following these steps, it may be beneficial to consult with an SAP expert or your organization's SAP support team for further assistance.