Guidelines
Application and Utilization of KEK Tax Allowance
Forgotten Account Guide
Guide to Change Inactive OSS Account Emails - Individuals
Replacement of Access Rights of Existing Business Actors (UMK)
Change of Business License - Business Data
Business Licensing in the Context of Merger
Customization Guide Business Process Support
OSS 1.1 Migration Guide (UMK)
OSS RBA Account Registration Guide (UMK)
Submission and Utilization of Super Tax Deduction for Research and Development (R&D) Activities
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