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-rw-r--r--src/include/taler_merchant_service.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/include/taler_merchant_service.h b/src/include/taler_merchant_service.h
index 7a2c7f34..b9a6a8df 100644
--- a/src/include/taler_merchant_service.h
+++ b/src/include/taler_merchant_service.h
@@ -793,6 +793,9 @@ struct TALER_MERCHANT_TipAuthorizeOperation;
* @param cls closure
* @param http_status HTTP status returned by the merchant backend
* @param ec taler-specific error code
+ * @param tip_id which tip ID should be used to pickup the tip
+ * @param tip_expiration when does the tip expire (needs to be picked up before this time)
+ * @param exchange_uri at what exchange can the tip be picked up
*/
typedef void
(*TALER_MERCHANT_TipAuthorizeCallback) (void *cls,