diff --git a/gbpservice/neutron/services/sfc/aim/exceptions.py b/gbpservice/neutron/services/sfc/aim/exceptions.py
index 88c337f5d..74d5b5bf1 100644
--- a/gbpservice/neutron/services/sfc/aim/exceptions.py
+++ b/gbpservice/neutron/services/sfc/aim/exceptions.py
@@ -112,3 +112,7 @@ class ConflictingNetworksDetectedInPortChain(exceptions.BadRequest):
 class DefaultExternalNetworkNotFound(exceptions.NotFound):
     message = _("Default External Network not found for SVI network "
                 "%(id)s.")
+
+
+class TooManyPPGsPerChainError(exceptions.BadRequest):
+    message = _("The max number of PPGs per chain supported is %(maxn)s.")
diff --git a/gbpservice/neutron/services/sfc/aim/sfc_driver.py b/gbpservice/neutron/services/sfc/aim/sfc_driver.py
index b82ac3eba..f5ef25162 100644
--- a/gbpservice/neutron/services/sfc/aim/sfc_driver.py
+++ b/gbpservice/neutron/services/sfc/aim/sfc_driver.py
@@ -42,6 +42,7 @@ FLOWC_DST = 'dst'
 LOG = logging.getLogger(__name__)
 PHYSDOM_TYPE = 'PhysDom'
 SUPPORTED_DOM_TYPES = [PHYSDOM_TYPE]
+MAX_PPGS_PER_CHAIN = 3
 
 
 class SfcAIMDriverBase(base.SfcDriverBase):
@@ -290,6 +291,8 @@ class SfcAIMDriver(SfcAIMDriverBase):
         #   can be removed once contract export is implemented.
         # TODO(ivar): two different chains cannot share left/right networks
         # TODO(ivar): right/left BDs same tenant as provider
+        if len(ppgs) > MAX_PPGS_PER_CHAIN:
+            raise exceptions.TooManyPPGsPerChainError(maxn=MAX_PPGS_PER_CHAIN)
         vrfs = set()
         for flowc in flowcs:
             provg = self._get_flowc_provider_group(p_ctx, flowc)
diff --git a/gbpservice/neutron/tests/unit/services/sfc/test_aim_sfc_driver.py b/gbpservice/neutron/tests/unit/services/sfc/test_aim_sfc_driver.py
index d27cbecf5..48a425aaf 100644
--- a/gbpservice/neutron/tests/unit/services/sfc/test_aim_sfc_driver.py
+++ b/gbpservice/neutron/tests/unit/services/sfc/test_aim_sfc_driver.py
@@ -1001,6 +1001,27 @@ class TestPortChain(TestAIMServiceFunctionChainingBase):
         self._verify_pc_mapping(pc)
         self._verify_pc_delete(pc)
 
+    def test_pc_max_ppg_validation(self):
+        fc = self._create_simple_flowc(src_svi=self.src_svi,
+                                       dst_svi=self.dst_svi)
+        ppg1 = self._create_simple_ppg(pairs=1)
+        ppg2 = self._create_simple_ppg(pairs=1)
+        ppg3 = self._create_simple_ppg(pairs=1)
+        ppg4 = self._create_simple_ppg(pairs=1)
+        self.create_port_chain(port_pair_groups=[ppg1['id'], ppg2['id'],
+                                                 ppg3['id'], ppg4['id']],
+                               flow_classifiers=[fc['id']],
+                               expected_res_status=400)
+        pc = self.create_port_chain(port_pair_groups=[ppg1['id'],
+                                                      ppg2['id'],
+                                                      ppg3['id']],
+                                    flow_classifiers=[fc['id']],
+                                    expected_res_status=201)['port_chain']
+        self.update_port_chain(pc['id'],
+                               port_pair_groups=[ppg1['id'], ppg2['id'],
+                                                 ppg3['id'], ppg4['id']],
+                               expected_res_status=500)
+
 
 class TestPortChainSVI(TestPortChain):