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# Why is budget reserved before approval?

Budget is reserved **to prevent the same amount from being used in multiple campaigns**.

### How budget reservation works
When a campaign is booked:
* the campaign amount is **reserved immediately**
* reserved budget cannot be used for other campaigns
* the remaining balance is still available to spend
This ensures budget is not overspent.

### What you can still do
Even with reserved budget:
* you can create and book other campaigns
* you can use the **remaining available balance**
* only the reserved amount is locked

### When reserved budget is released
Reserved budget is freed when:
* the campaign is **rejected**
Until one of these happens, the reserved amount remains locked.

### Important to know
* Reservation happens **before approval**
* Reserved budget does not mean reimbursement is guaranteed
* Reservation is automatic and cannot be manually overridden
* Reserved budget is not available for reuse until released