The Statement Descriptor Preview on Account Settings shows what customers will see, built as <prefix>* <descriptor> #<order number> — for example SP* Green Kitchen #088. The parts come from two different settings pages, which is a common source of confusion:

• Prefix (up to 3 characters, shown as XXX*) — comes from your Stripe account's own Statement Descriptor Prefix, set on Stripe > Account Settings > Edit Account Information. If none is set, or your country is a cross-border payout country, Sprwt falls back to SP.
• Descriptor (the rest of the line) — built at charge time from the Business Settings Payment tab's Stripe descriptor only 12 char value; if that is blank Sprwt uses your company name, and if both are blank it uses the word Invoice.
• #order number — the Sprwt order number of each charge.

So a charge typically appears as something like SP* MyKitchen #4821 — the account-level prefix plus the order-specific suffix. Changing the Business Settings field changes the suffix on future orders immediately; changing the Account Settings prefix changes the part before the * on all future charges. Note that Account Settings also has a separate Statement Descriptor field (10 characters) — that field is not used on charges at all; only Statement Descriptor Prefix is. Stripe limits the whole string to 22 characters, so the descriptor is trimmed to fit and characters such as < > \ ' " * are removed. Keep the descriptor short and recognisable (your trading name) — unrecognised descriptors are a common cause of disputes filed as "unrecognized".