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A trust receipt cannot be finalised until the unallocated amount is $0.
A transaction must be locked once entered. Any attempt to change the transaction MUST NOT change the original transaction. A request for a change must create a new transaction, dated TODAY that has the effect of reversing the original transaction.
You should be extremely cautious when reversing trust receipts as trust accounts are a highly regulated and scrutinized aspect of law firms. Non- compliant trust accounting activities are the highest cause of lawyers being penalised or losing their practising certificates.