diff --git a/astakosclient/astakosclient/__init__.py b/astakosclient/astakosclient/__init__.py
index 759e91afdeb218263b978d8cfd79ec41153aa062..641a2379947ce56a5cf39df8021e868edd814783 100644
--- a/astakosclient/astakosclient/__init__.py
+++ b/astakosclient/astakosclient/__init__.py
@@ -560,7 +560,7 @@ class AstakosClient(object):
 
     # ----------------------------------
     # do a POST to ``API_COMMISSIONS``
-    def issue_commission(self, request):
+    def _issue_commission(self, request):
         """Issue a commission
 
         Keyword arguments:
@@ -591,6 +591,57 @@ class AstakosClient(object):
             self.logger.error(msg)
             raise AstakosClientException(msg)
 
+    def _mk_user_provision(self, holder, source, resource, quantity):
+        holder = "user:" + holder
+        source = "project:" + source
+        return {"holder": holder, "source": source,
+                "resource": resource, "quantity": quantity}
+
+    def _mk_project_provision(self, holder, resource, quantity):
+        holder = "project:" + holder
+        return {"holder": holder, "source": None,
+                "resource": resource, "quantity": quantity}
+
+    def mk_provisions(self, holder, source, resource, quantity):
+        return [self._mk_user_provision(holder, source, resource, quantity),
+                self._mk_project_provision(source, resource, quantity)]
+
+    def issue_commission_generic(self, user_provisions, project_provisions,
+                                 name="", force=False, auto_accept=False):
+        """Issue commission (for multiple holder/source pairs)
+
+        keyword arguments:
+        user_provisions  -- dict mapping user holdings
+                            (user, project, resource) to integer quantities
+        project_provisions -- dict mapping project holdings
+                              (project, resource) to integer quantities
+        name        -- description of the commission (string)
+        force       -- force this commission (boolean)
+        auto_accept -- auto accept this commission (boolean)
+
+        In case of success return commission's id (int).
+        Otherwise raise an AstakosClientException.
+
+        """
+        request = {}
+        request["force"] = force
+        request["auto_accept"] = auto_accept
+        request["name"] = name
+        try:
+            request["provisions"] = []
+            for (holder, source, resource), quantity in \
+                    user_provisions.iteritems():
+                p = self._mk_user_provision(holder, source, resource, quantity)
+                request["provisions"].append(p)
+            for (holder, resource), quantity in project_provisions.iteritems():
+                p = self._mk_project_provision(holder, resource, quantity)
+                request["provisions"].append(p)
+        except Exception as err:
+            self.logger.error(str(err))
+            raise BadValue(str(err))
+
+        return self._issue_commission(request)
+
     def issue_one_commission(self, holder, source, provisions,
                              name="", force=False, auto_accept=False):
         """Issue one commission (with specific holder and source)
@@ -605,7 +656,6 @@ class AstakosClient(object):
 
         In case of success return commission's id (int).
         Otherwise raise an AstakosClientException.
-        (See also issue_commission)
 
         """
         check_input("issue_one_commission", self.logger,
@@ -619,14 +669,13 @@ class AstakosClient(object):
         try:
             request["provisions"] = []
             for resource, quantity in provisions.iteritems():
-                prov = {"holder": holder, "source": source,
-                        "resource": resource, "quantity": quantity}
-                request["provisions"].append(prov)
+                ps = self.mk_provisions(holder, source, resource, quantity)
+                request["provisions"].extend(ps)
         except Exception as err:
             self.logger.error(str(err))
             raise BadValue(str(err))
 
-        return self.issue_commission(request)
+        return self._issue_commission(request)
 
     # ----------------------------------
     # do a GET to ``API_COMMISSIONS``
diff --git a/astakosclient/astakosclient/tests.py b/astakosclient/astakosclient/tests.py
index c67b6e1df7480ca29243aadb166b0bae46231f17..27491e03e6f4debb59c451a4bc4299c0aea1f5a5 100644
--- a/astakosclient/astakosclient/tests.py
+++ b/astakosclient/astakosclient/tests.py
@@ -781,7 +781,7 @@ class TestCommissions(unittest.TestCase):
         global auth_url
         try:
             client = AstakosClient(token['id'], auth_url)
-            response = client.issue_commission(commission_request)
+            response = client._issue_commission(commission_request)
         except Exception as err:
             self.fail("Shouldn't raise Exception %s" % err)
         self.assertEqual(response, commission_successful_response['serial'])
@@ -795,7 +795,7 @@ class TestCommissions(unittest.TestCase):
         new_request['provisions'][1]['quantity'] = 520000000
         try:
             client = AstakosClient(token['id'], auth_url)
-            client.issue_commission(new_request)
+            client._issue_commission(new_request)
         except QuotaLimit:
             pass
         except Exception as err:
diff --git a/astakosclient/docs/index.rst b/astakosclient/docs/index.rst
index cdf9aea732629ba4fe43bfcc5dd0f22d04d22d9f..719b033d3aaaf9952b3574c7a866b6e9b6786bcc 100644
--- a/astakosclient/docs/index.rst
+++ b/astakosclient/docs/index.rst
@@ -139,9 +139,12 @@ retry=0, use_pool=False, pool_size=8, logger=None\ **)**
         quotas of a specific user with argument user=UUID. In case of error it
         raises an AstakosClientException exception.
 
-    **issue_commission(**\ request\ **)**
-        Issue a commission. In case of success it returns commission's id
-        (int). Otherwise it raises an AstakosClientException exception.
+    **issue_commission_generic(**\ user_provisions, project_provisions, name="", force=False, auto_accept=False\ **)**
+        Issue a commission. User provisions are specified as a dict from
+        (user, project, resource) to int; project provisions as a dict from
+        (project, resource) to int.
+        In case of success return commission's id (int).
+        Otherwise raise an AstakosClientException exception.
 
     **issue_one_commission(**\ holder, source, provisions, name="", force=False, auto_accept=False\ **)**
         Issue a commission. We have to specify the holder, the source and the