This article explains when credit is deducted from the Learner Credit budget within the assignment process.
Creating an assignment as an administrator does not deduct credit permanently from a selected learner credit budget. No funds are “spent” until a learner completes their enrollment into an assigned course.
Between assignment and enrollment, the courses’ value in learner credit is moved to an “allocated state”, which ensures that organizations cannot spend past a zero-dollar balance. This also prevents learners from finding themselves unable to enroll due to a completely depleted budget.
For more information or assistance Learner Credit, submit a support ticket to enterprise-support@edx.org, or reach out to your account manager (where applicable)