The Batch fails to post due to an invoice with materials that have no technicians assigned.
Solution
Search for and go to the invoice causing the issue.
Click Edit next to the materials section.
On the Edit Material screen, assign a technician in the Technician field.
When finished, click Save.
Repeat steps 2-4 for each material listed.
Post the batch again.
A batch, or invoice batch, is a set of invoices that have been audited and are ready to post. You will use the Invoice screen in ServiceTitan to create invoice batches. On the Invoice screen, you'll have access to unbatched and batched invoices.