Exclude Burden Transactions from Billing

Summary:

We have a requirement to exclude burden transactions from billing into certain Contracts. We tried a couple of options

1) We tried to do this by using Override rate option at Contracts with a rate of 0.00001 but system is doing a calculation of that override rate multiplied by the quantity on burden transaction and raising below error

"The transaction isn't billed because billing is based on rates but the quantity on the transaction is zero."

2) Then, We tried to make that burden transaction as nonbillable and got the below error

"You can't perform this adjustment because adjustments aren't allowed on system-generated summarized burden transactions. (PJC-2220477)"