Symptom:
Modify Entry operation fails.

Conditions:
Create pmap  p1
Create cmap  c1
Create cmap  c2
Add entry at seq. 10  to pmap with match c1 action a1
Add entry at seq. 11 to pmap with match c2 action a2
submit operation

Now try to modify pmap,
modify entry seq 10 -- chage a1 to a3 --- > operation fails.