invalidCredentialsError (error code 11): Invalid credentials

• The backend answered 7225 (invalid API key) or 7224 (invalid auth token). iOS also maps 7104 (invalid App Store shared secret) and 7981 (invalid IAM token), and Android also maps 7107 (invalid Play Store credentials) (BackendErrorCode.swift, errors.kt).
• The key has a typo, or it belongs to another project or another server. A RevenueCat key sent to RevenueDot, or the reverse, is unknown.
• The proxy URL was set after configure, so the first requests went to the wrong host with this key.
• A key of the wrong kind: a test_ Test Store key in a release build, or a key from a different platform's app.
• A subscriber access token that expired or names another app user ID.

• Do not retry. The key stays wrong until you fix it.
• Show a generic "service unavailable" message to customers and send an alert to yourself. Customers cannot fix this.
• Do not grant access from the error. Customers who already paid keep the access the SDK has cached.

// Swift
do {
  let result = try await Purchases.shared.purchase(package: package)
} catch let error as ErrorCode where error == .invalidCredentialsError {
  // handle invalid credentials
}

// Kotlin
if (error.code == PurchasesErrorCode.InvalidCredentialsError) { /* ... */ }

On RevenueDot: RevenueDot answers HTTP 401 with code 7225 and the message "Invalid API Key." when the Authorization: Bearer key is missing or unknown. A subscriber access token (rdat_) that has expired, or that names another app user ID, gets 401 with 7224. The health endpoints need no key. See common problems.