ODE multiple decision scopes not working for a offer contains two or more representations

Hi,

i created the personalised offer in ode with two representations. one is with placement "A" and another is with placement "B". now both these representations will qualify for the same audience. each representation has a unique content. Now, when i create a decision with two placements, i'll have two encoded decision scopes. these scopes i add it in edge api. considering the edge api body, i'm adding the decision scopes in this way 

"query": {
"personalization": {
"decisionScopes": [
"decisionscope1",
"decisionscope2"

Now when i hit the edge api. only the decisionscope1 is getting the personalised offer response but for decisionscope2 i see fall back offer. when i change the order of the decisionscopes. i see decisionscope2 returns personalised offer response but decisionscope1 returns fallback one. can any one please help on this??
]
}
}