48 CFR 32.806: 32.806 Contract clauses.

(a)(1) The contracting officer shall insert the clause at 52.232-23, Assignment of Claims, in solicitations and contracts expected to exceed the micro-purchase threshold, unless the contract will prohibit the assignment of claims (see 32.803(b)). The use of the clause is not required for purchase orders. However, the clause may be used in purchase orders expected to exceed the micro-purchase threshold, that are accepted in writing by the contractor, if such use is consistent with agency policies and regulations.

(2) If a no-setoff commitment has been authorized (see FAR 32.803(d)), the contracting officer shall use the clause with its Alternate I.

(b) The contracting officer shall insert the clause at 52.232-24, Prohibition of Assignment of Claims, in solicitations and contracts for which a determination has been made under agency regulations that the prohibition of assignment of claims is in the Government's interest.