What is per-diem policy of tcs for business visa travel to Germany. Do they provide accommodation and conveyance to employees?

I'd suggest travel light so that you can move find accommodation in the hostel or shared basis or connect with onsite team member to if they can provide you accommodation on some cost ( both should have benefits and also bring some fags with you if anyone agrees ) and last if you or business travel, take ready to cook foods if you ain't into local foods so you need not to buy food always outside. My hack - I carry always hand blender for morning smoothie, induction cooker for night cooking ( I try to book BnB or shared accommodation) - they usually provide kitchen and also good group to hangout.

For grades upto C2, AA-60 FA-30 TA-10 n for grades C3A n above AA-70 FA-50 RA-30 everything in EUR

The allowance comprises three components:Accommodation Allowance, Transportation Allowance and Food Allowance.If you manage to stay within or below the allocated amount for each category, you may retain any savings. However, if your expenses exceed the allowance in a specific category, you may seek reimbursement, but you have to notify the account team (manager/BRM) .For example, if no hotels are available within your accommodation allowance and you incur higher costs, you will need to cover the excess out of pocket initially. To ensure reimbursement, please inform your account team, it happens that they can advise you some better option for travel as many people have already done in the past. Once you return from your trip, the approved reimbursement can be processed.