How to Record Wafer Flatness Testing Fees
Accounting for external metrology services used to verify wafer surface topography and flatness requirements.
| Account Name | Type | Debit ($) | Credit ($) |
|---|---|---|---|
| Manufacturing Overhead - Testing Services | Debit | 12,500.00 | - |
| Accounts Payable | Credit | - | 12,500.00 |
💡 Accountant's Note
Testing fees for wafer flatness are typically categorized as indirect manufacturing costs within overhead unless the testing is specifically for a custom R&D project.
Practitioner & Systems Framework
💻 ERP Architecture
Ensure service purchase orders are linked to the specific production lot or batch ID.
⚠️ Audit Flags
Sudden spikes in testing costs relative to wafer throughput.
📄 Required Documentation
Metrology report from the service provider and a valid service invoice.
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