Open a case’s Finances > Billing to prepare client billing from eligible time and expense entries.
You need Create Invoices permission. Eligible work must be reviewed, not already invoiced, and have valid finance-item mapping and billing rates. Approved, Committed, and Paid entries can qualify: staff payment state does not replace client billing.
Check whether it is awaiting review, already linked to another invoice, missing a finance item, or missing a valid client billing rate. Older records may require an administrator to repair item mappings. Do not submit duplicate work to avoid the error.
Review the finished invoice before sending it. Creating an invoice does not itself mean it was emailed or paid, and invoice-linked source entries are restricted from ordinary editing.
The controls you see depend on your permissions, access to the case, the case status, and the entry's review, invoice, and payment state. If an action is missing, ask your CaseWyze administrator to check these conditions.