diff --git a/src/exchangedb/0003-aml_history.sql b/src/exchangedb/0003-aml_history.sql
index c2ab532da..1c737265b 100644
--- a/src/exchangedb/0003-aml_history.sql
+++ b/src/exchangedb/0003-aml_history.sql
@@ -110,7 +110,7 @@ BEGIN
   EXECUTE FORMAT (
     'CREATE INDEX ' || table_name || '_main_index '
     'ON ' || table_name || ' '
-    '(h_payto ASC, decision_time ASC);'
+    '(h_payto, decision_time DESC);'
   );
 END $$;
 
diff --git a/src/exchangedb/exchange_do_insert_aml_decision.sql b/src/exchangedb/exchange_do_insert_aml_decision.sql
new file mode 100644
index 000000000..480736afa
--- /dev/null
+++ b/src/exchangedb/exchange_do_insert_aml_decision.sql
@@ -0,0 +1,102 @@
+--
+-- This file is part of TALER
+-- Copyright (C) 2023 Taler Systems SA
+--
+-- TALER is free software; you can redistribute it and/or modify it under the
+-- terms of the GNU General Public License as published by the Free Software
+-- Foundation; either version 3, or (at your option) any later version.
+--
+-- TALER is distributed in the hope that it will be useful, but WITHOUT ANY
+-- WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+-- A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+--
+-- You should have received a copy of the GNU General Public License along with
+-- TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+--
+
+CREATE OR REPLACE FUNCTION exchange_do_insert_aml_decision(
+  IN in_h_payto BYTEA,
+  IN in_new_threshold_val INT8,
+  IN in_new_threshold_frac INT4,
+  IN in_new_status INT4,
+  IN in_decision_time INT8,
+  IN in_justification VARCHAR,
+  IN in_decider_pub BYTEA,
+  IN in_decider_sig BYTEA,
+  OUT out_invalid_officer BOOLEAN,
+  OUT out_last_date INT8)
+LANGUAGE plpgsql
+AS $$
+
+-- Check officer is eligible to make decisions.
+PERFORM
+  FROM exchange.aml_staff
+  WHERE decider_pub=in_decider_pub
+    AND is_active
+    AND NOT read_only;
+IF NOT FOUND
+THEN
+  out_invalid_officer=TRUE;
+  out_last_date=0;
+  RETURN;
+END IF;
+out_invalid_officer=FALSE;
+
+-- Check no more recent decision exists.
+SELECT decision_time
+  INTO out_last_date
+  FROM exchange.aml_history
+  WHERE h_payto=in_h_payto
+  ORDER BY decision_time DESC;
+IF FOUND
+THEN
+  IF out_last_date >= in_decision_time
+  THEN
+    -- Refuse to insert older decision.
+    RETURN;
+  END IF;
+  UPDATE exchange.aml_status
+    SET threshold_val=in_threshold_val
+       ,threshold_frac=in_threshold_frac
+       ,status=in_new_status
+   WHERE h_payto=in_h_payto;
+  ASSERT FOUND, 'cannot have AML decision history but no AML status';
+ELSE
+  out_last_date = 0;
+  INSERT INTO exchange.aml_status
+    (h_payto
+    ,threshold_val
+    ,threshold_frac
+    ,status)
+    VALUES
+    (in_h_payto
+    ,in_threshold_val
+    ,in_threshold_frac
+    ,in_new_status);
+END IF;
+
+
+INSERT INTO exchange.aml_history
+  (h_payto
+  ,new_threshold_val
+  ,new_threshold_frac
+  ,new_status
+  ,decision_time
+  ,justification
+  ,decider_pub
+  ,decider_sig
+  ) VALUES
+  (in_h_payto
+  ,in_new_threshold_val
+  ,in_new_threshold_frac
+  ,in_new_status
+  ,in_decision_time
+  ,in_justification
+  ,in_decider_pub
+  ,in_decider_sig);
+
+END $$;
+
+
+COMMENT ON FUNCTION exchange_do_insert_aml_decision(BYTEA, INT8, INT4, INT4, INT8, VARCHAR, BYTEA, BYTEA)
+  IS 'Checks whether the AML officer is eligible to make AML decisions and if so inserts the decision into the table';
diff --git a/src/exchangedb/exchange_do_insert_aml_officer.sql b/src/exchangedb/exchange_do_insert_aml_officer.sql
new file mode 100644
index 000000000..72f813e89
--- /dev/null
+++ b/src/exchangedb/exchange_do_insert_aml_officer.sql
@@ -0,0 +1,74 @@
+--
+-- This file is part of TALER
+-- Copyright (C) 2023 Taler Systems SA
+--
+-- TALER is free software; you can redistribute it and/or modify it under the
+-- terms of the GNU General Public License as published by the Free Software
+-- Foundation; either version 3, or (at your option) any later version.
+--
+-- TALER is distributed in the hope that it will be useful, but WITHOUT ANY
+-- WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+-- A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+--
+-- You should have received a copy of the GNU General Public License along with
+-- TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+--
+
+CREATE OR REPLACE FUNCTION exchange_do_insert_aml_officer(
+  IN in_decider_pub BYTEA,
+  IN in_master_sig BYTEA,
+  IN in_decider_name VARCHAR,
+  IN in_is_active BOOLEAN,
+  IN in_read_only BOOLEAN,
+  IN in_last_change INT8,
+  OUT out_last_change INT8)
+LANGUAGE plpgsql
+AS $$
+
+INSERT INTO exchange.aml_staff
+  (decider_pub
+  ,master_sig
+  ,decider_name
+  ,is_active
+  ,read_only
+  ,last_change
+  ) VALUES
+  (in_decider_pub
+  ,in_master_sig
+  ,in_decider_name
+  ,in_is_active
+  ,in_read_only
+  ,in_last_change)
+ ON CONFLICT DO NOTHING;
+IF FOUND
+THEN
+  out_last_change=0;
+  RETURN;
+END IF;
+
+-- Check update is most recent...
+SELECT last_change
+  INTO out_last_change
+  FROM exchange.aml_staff
+  WHERE decider_pub=in_decider_pub;
+ASSERT FOUND, 'cannot have INSERT conflict but no AML staff record';
+
+IF out_last_change >= in_last_change
+THEN
+  -- Refuse to insert older status
+ RETURN;
+END IF;
+
+-- We are more recent, update existing record.
+UPDATE exchange.aml_staff
+  SET master_sig=in_master_sig
+     ,decider_name=in_decider_name
+     ,is_active=in_is_active
+     ,read_only=in_read_only
+     ,last_change=in_last_change
+  WHERE decider_pub=in_decider_pub;
+END $$;
+
+
+COMMENT ON FUNCTION exchange_do_insert_aml_officer(BYTEA, BYTEA, VARCHAR, BOOL, BOOL, INT8)
+  IS 'Inserts or updates AML staff record, making sure the update is more recent than the previous change';
diff --git a/src/exchangedb/pg_insert_aml_decision.c b/src/exchangedb/pg_insert_aml_decision.c
index 421628f65..85570ed85 100644
--- a/src/exchangedb/pg_insert_aml_decision.c
+++ b/src/exchangedb/pg_insert_aml_decision.c
@@ -51,23 +51,23 @@ TEH_PG_insert_aml_decision (
     GNUNET_PQ_query_param_auto_from_type (decider_sig),
     GNUNET_PQ_query_param_end
   };
+  struct GNUNET_PQ_ResultSpec rs[] = {
+    GNUNET_PQ_result_spec_bool ("out_invalid_officer",
+                                invalid_officer),
+    GNUNET_PQ_result_spec_timestamp ("out_last_date",
+                                     last_date),
+    GNUNET_PQ_result_spec_end
+  };
 
-  // FIXME: set invalid_officer
-  // FIXME: set last_date!
   PREPARE (pg,
-           "insert_aml_decision",
-           "INSERT INTO aml_history "
-           "(h_payto"
-           ",new_threshold_val"
-           ",new_threshold_frac"
-           ",new_status"
-           ",decision_time"
-           ",justification"
-           ",decider_pub"
-           ",decider_sig"
-           ") VALUES "
+           "do_insert_aml_decision",
+           "SELECT"
+           " out_invalid_officer"
+           ",out_last_date"
+           " FROM exchange_do_insert_aml_decision"
            "($1, $2, $3, $4, $5, $6, $7, $8);");
-  return GNUNET_PQ_eval_prepared_non_select (pg->conn,
-                                             "insert_aml_decision",
-                                             params);
+  return GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
+                                                   "do_insert_aml_decision",
+                                                   params,
+                                                   rs);
 }
diff --git a/src/exchangedb/pg_insert_aml_decision.h b/src/exchangedb/pg_insert_aml_decision.h
index 94f648fb1..b539945a7 100644
--- a/src/exchangedb/pg_insert_aml_decision.h
+++ b/src/exchangedb/pg_insert_aml_decision.h
@@ -1,6 +1,6 @@
 /*
    This file is part of TALER
-   Copyright (C) 2022 Taler Systems SA
+   Copyright (C) 2022, 2023 Taler Systems SA
 
    TALER is free software; you can redistribute it and/or modify it under the
    terms of the GNU General Public License as published by the Free Software
diff --git a/src/exchangedb/pg_insert_aml_officer.c b/src/exchangedb/pg_insert_aml_officer.c
index 33e6c86f7..c1f635a64 100644
--- a/src/exchangedb/pg_insert_aml_officer.c
+++ b/src/exchangedb/pg_insert_aml_officer.c
@@ -47,20 +47,20 @@ TEH_PG_insert_aml_officer (
     GNUNET_PQ_query_param_timestamp (&last_change),
     GNUNET_PQ_query_param_end
   };
+  struct GNUNET_PQ_ResultSpec rs[] = {
+    GNUNET_PQ_result_spec_timestamp ("out_last_change",
+                                     previous_change),
+    GNUNET_PQ_result_spec_end
+  };
 
-  // FIXME: need to check for previous record!
   PREPARE (pg,
-           "insert_aml_staff",
-           "INSERT INTO aml_staff "
-           "(decider_pub"
-           ",master_sig"
-           ",decider_name"
-           ",is_active"
-           ",read_only"
-           ",last_change"
-           ") VALUES "
+           "do_insert_aml_staff",
+           "SELECT"
+           " out_last_change"
+           " FROM exchange_do_insert_aml_officer"
            "($1, $2, $3, $4, $5, $6);");
-  return GNUNET_PQ_eval_prepared_non_select (pg->conn,
-                                             "insert_aml_staff",
-                                             params);
+  return GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
+                                                   "do_insert_aml_staff",
+                                                   params,
+                                                   rs);
 }
diff --git a/src/exchangedb/pg_persist_policy_details.c b/src/exchangedb/pg_persist_policy_details.c
index 2b7787878..3bc7afa98 100644
--- a/src/exchangedb/pg_persist_policy_details.c
+++ b/src/exchangedb/pg_persist_policy_details.c
@@ -59,7 +59,15 @@ TEH_PG_persist_policy_details (
     GNUNET_PQ_result_spec_end
   };
 
-  // FIXME: prepare missing!!?!
+  PREPARE (pg,
+           "call_insert_or_update_policy_details",
+           "SELECT"
+           " out_policy_details_serial_id AS policy_details_serial_id"
+           ",out_accumulated_total_val AS accumulated_total_val"
+           ",out_accumulated_total_frac AS accumulated_total_frac"
+           ",out_fulfillment_state AS fulfillment_state"
+           " FROM exchange_do_insert_or_update_policy_details"
+           "($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, $13);");
   return GNUNET_PQ_eval_prepared_singleton_select (pg->conn,
                                                    "call_insert_or_update_policy_details",
                                                    params,
diff --git a/src/exchangedb/procedures.sql.in b/src/exchangedb/procedures.sql.in
index 194830248..73b75af29 100644
--- a/src/exchangedb/procedures.sql.in
+++ b/src/exchangedb/procedures.sql.in
@@ -37,6 +37,8 @@ SET search_path TO exchange;
 #include "exchange_do_reserve_open_deposit.sql"
 #include "exchange_do_reserve_open.sql"
 #include "exchange_do_insert_or_update_policy_details.sql"
+#include "exchange_do_insert_aml_decision.sql"
+#include "exchange_do_insert_aml_officer.sql"
 #include "exchange_do_batch_reserves_in_insert.sql"
 #include "exchange_do_batch_reserves_update.sql"
 #include "exchange_do_batch2_reserves_in_insert.sql"