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SAP BAS Extension Dependency Errors - Unknown SAPOSS Extensions in New Dev Space

08-31-2026 8:33 AM
aforones Newcomer
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Hi everyone,

I'm currently facing an issue in SAP Business Application Studio (BAS) using an SAP BTP Trial account.

The following extension errors are displayed:

Cannot activate the 'SAP Web IDE adapter for VS Code' extension because it depends on an unknown 'SAPOSS.app-studio-toolkit' extension.
 
Cannot activate the 'SAP HANA Calculation View Editor' extension because it depends on an unknown 'saposs.code-snippet-tool' extension.
 
Cannot activate the 'SAP HANA Project Explorer' extension because it depends on an unknown 'saposs.vscode-cf-tools' extension.

Environment

  • SAP BTP Trial
  • SAP Business Application Studio
  • CAP Project (Node.js)
  • Browser-based BAS

    Troubleshooting Already Performed

    • Restarted the Dev Space
    • Hard refresh of BAS
    • Checked the Extensions Marketplace
    • Created a completely new Dev Space
    • Verified that the issue still occurs in the new Dev Space

      Additional Observation

      • When searching for the toolkit in the Extensions Marketplace, I can only find:
        SAP Business Application Studio toolkit (OpenVSX Fork)

        However, the error specifically references:
        • SAPOSS.app-studio-toolkit
        • SAPOSS.code-snippet-tool
        • SAPOSS.vscode-cf-tools

           

          which appear to be official SAP extension dependencies. The required extensions do not seem to be available/recognized in my BAS environment.

          Questions

          1. Has anyone recently encountered the same issue?
          2. Is this related to a BAS image/update issue?
          3. Are there any known problems with extension dependencies in SAP BTP Trial environments?
          4. Is there a recommended workaround or fix?

            Any guidance would be greatly appreciated.

            Thank you.



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