Our Organization is basically into outsourcing skillsets.. The company has opened its own individual unit as well apart from outsourcing engineers.. The company has a per diem policy for both domestic and international... i have been to domestic onsite implementation for couple of months..We were given guest house accommodation and cab facility. After finishing the implementation, i submitted the travel expense sheet. i was told that there is no per diem for our unit.. i can reimburse the actuals producing the bills... Is there any provision where i can challenge?