index ac29d17..2b240c1 100644
--- a/trytond/trytond/modules/account_payment_sepa/payment.py
+++ b/trytond/trytond/modules/account_payment_sepa/payment.py
@@ -190,18 +190,23 @@ class Group(metaclass=PoolMeta):
         Payment = pool.get('account.payment')
         if self.kind == 'receivable':
             mandates = Payment.get_sepa_mandates(self.payments)
+            sequence_types = {}
             for payment, mandate in zip(self.payments, mandates):
                 if not mandate:
                     raise ProcessError(
                         gettext('account_payment_sepa'
                             '.msg_payment_process_no_mandate',
                             payment=payment.rec_name))
-                # Write one by one because mandate.sequence_type must be
-                # recomputed each time
-                Payment.write([payment], {
-                        'sepa_mandate': mandate,
-                        'sepa_mandate_sequence_type': mandate.sequence_type,
-                        })
+                sequence_type = sequence_types.get(mandate)
+                if not sequence_type:
+                    sequence_type = mandate.sequence_type
+                    if sequence_type == 'FRST':
+                        sequence_types[mandate] = 'RCUR'
+                    else:
+                        sequence_types[mandate] = sequence_type
+                payment.sepa_mandate = mandate
+                payment.sepa_mandate_sequence_type = sequence_type
+            Payment.save(self.payments)
         else:
             for payment in self.payments:
                 if not payment.sepa_bank_account_number: