mtaBuild failing with the error "Error: [2026-01-22 06:01:02] ERROR the "mta.yaml" file is not valid

[Yadav-vibha]

I am trying to run my piper build step mtaBuild in github action workflow, but the build keeps on failing despite multiple tries. Though the error shows invalid mta file, but the build runs successfully in azure pipeline.

Link to azure run:https://dev.azure.com/hyperspace-pipelines-2/IPE-AC-ExpenseManagement/_build/results?buildId=2059511&view=logs&s=6884a131-87da-5381-61f3-d7acc3b91d76

Link to github action workflow: https://github.tools.sap/IPE-AC-ExpenseManagement/expense-masterdata/actions/runs/25036632/job/117100571

Link to the branch which in which I am trying out my changes :https://github.tools.sap/IPE-AC-ExpenseManagement/expense-masterdata/tree/hyperspace-github-actions

Link to mta file: https://github.tools.sap/IPE-AC-ExpenseManagement/expense-masterdata/blob/hyperspace-github-actions/mta.yaml

• MBT Version:1.2.34
• OS Version: MacOS Tahoe 26.1
• link to the project: https://github.tools.sap/IPE-AC-ExpenseManagement/expense-masterdata/tree/hyperspace-github-actions