GWAC and MAC reporting in the FAS SRP workbook
GWAC and MAC contractors use the GWAC-MAC Data tab in the same official SRP Excel workbook used for MAS reporting. It is a separate 17-column format built around paid invoices, task orders, CLINs, work location, fee category and clearance level.
Reviewed 17 August 2026 against the official GWAC/MAC file-upload instructions and FAS SRP user-guide scope.
The required non-MAS fields
| Group | Fields in the official tab |
|---|---|
| Contract and invoice | Contract Number, Invoice Number, Paid Date, Task Order, Line ID |
| Line classification | SIN/CLIN, Description of Deliverable, Unit Measure |
| Amounts | Quantity, Unit Price, Total Price |
| Contract controls | Line Item Location, Purchase Line Fee Category, Security Clearance Level |
| Conditional or optional | Knowledge/Skill Level, Applicable Labor Law, Final Invoice Check |
What differs from the MAS tab
The report is invoice- and task-order-centred rather than order-line-centred. Paid Date replaces the MAS order date. The non-MAS tab also carries contract-specific fee and labor fields. GSA's guide uses vehicles such as Polaris and OASIS+ as examples, and the SRP manual covers GWAC, MAC and BMO contractors.
Contract-specific rules still matter
The workbook structure is common, but valid CLINs, CAF treatment and conditional fields depend on the vehicle and task order. For example, GSA's current instructions distinguish ordinary CAF CLINs, special-rate CAF and zero-invoice entries. A structural validator can catch blank required fields, dates, quantities and arithmetic; it cannot decide which CLIN your contract requires. Confirm those choices against the contract and GSA program instructions.
What TDR Filer checks
- recognises a filled GWAC-MAC tab instead of treating it as MAS;
- maps a normal invoice export into the 17 official columns;
- checks mandatory cells, dates, positive quantities and line arithmetic;
- writes only the official GWAC-MAC worksheet XML and preserves every other workbook entry.
Check a GWAC/MAC export. The second contract type is preselected. No account or payment is required.
Open the GWAC/MAC validator