Application Messages are not appearing

I am using EBS 12.1.3 with DB 12.1.0.2.0

I have defined some application messages and trying to show in my custom form. But surprisingly only one message is being shown. Rest of of the message only popup message code which I have defined in application. Below is the code I am using to show messages:

IF v_bundle1 > 0 THEN

fnd_message.set_name('XRCL','XRCL_BUNDLE1_DISCOUNT_MESSAGE');

fnd_message.show;

--fnd_message.debug('With WC customer gets 5% discount for bidet spray items');

END IF;

IF v_bundle2 > 0 THEN

fnd_message.set_name('XRCL','XRCL_BUNDLE2_DISCOUNT_MESSAGE');

fnd_message.show;

--fnd_message.debug('With WB customer gets 5% discount for faucet and mirror items');