How To Fix VMP_MSG298 - You are not authorized to access Work Breakdown Structure BOM

SAP Error Message - Details

• Message type: E = Error

• Message class: VMP_MSG - VMP Message Manager

• Message number: 298

• Message text: You are not authorized to access Work Breakdown Structure BOM

Self-Explanatory Message

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• What is the cause and solution for SAP error message VMP_MSG298 - You are not authorized to access Work Breakdown Structure BOM ?

  SAP Error Message:
  
  VMP_MSG298 – "You are not authorized to access Work Breakdown Structure BOM"
  
  Cause:
  This error occurs because the user does not have the necessary authorization to access or modify the Work Breakdown Structure (WBS) Bill of Materials (BOM) in the Project System (PS) module. Specifically, the user lacks the required authorization objects or roles that control access to WBS BOM data.
  
  Explanation:
  
  The Work Breakdown Structure BOM is a special type of BOM linked to project elements in SAP PS.
  Access to WBS BOMs is controlled by specific authorization objects, such as:
  
  C_PROJECT (Project definition)
  C_BOM (Bill of Material)
  C_WBS (WBS element)
  
  
  If the user’s roles or profiles do not include these authorizations with the appropriate activity (e.g., display, change), the system will block access and show this error.
  
  
  Solution:
  
  
  Check User Authorizations:
  
  Verify the user’s roles and profiles in transaction SU01 or PFCG.
  Check if the user has the necessary authorizations for:
  
  Project System (PS) objects (C_PROJECT, C_WBS)
  BOM objects (C_BOM)
  
  
  Ensure the user has the required activity (e.g., 03 = display, 02 = change) for these objects.
  
  
  
  Add Missing Authorizations:
  
  If missing, add the required authorization objects and values to the user’s role.
  For example:
  
  C_PROJECT: Object type = Project definition, Activity = Display/Change
  C_WBS: WBS element authorization
  C_BOM: BOM authorization for the relevant plant or BOM usage
  
  
  
  
  
  Assign Updated Role to User:
  
  After updating the role, assign it to the user and have the user log off and log back in.
  
  
  
  Test Access:
  
  Try accessing the WBS BOM again to confirm the issue is resolved.
  
  
  
  
  Additional Information:
  
  Sometimes, the error can also occur if the user tries to access a WBS BOM that belongs to a project or WBS element for which they do not have authorization.
  Authorization checks in SAP PS are strict to ensure project data security.
  If you are unsure which authorizations are missing, use transaction SU53 immediately after the error occurs to analyze the missing authorization.
  Consult your SAP Security or Basis team to update roles and authorizations properly.
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Cause
  Missing authorization to access WBS BOM (missing C_PROJECT, C_WBS, or C_BOM authorizations)
  
  
  Solution
  Add required authorizations to user roles and assign updated roles to the user
  
  
  Check
  Use SU53 to identify missing authorizations after error occurs
  
  
  
  
  If you need further help, please provide the user ID and the exact transaction or process where the error occurs.