Which feature is crucial for maintaining sequence in transaction numbering?

The feature that is crucial for maintaining sequence in transaction numbering is the automatic generation of sequential numbers. This function ensures that each transaction receives a unique number that follows a specific order, preventing duplicates and maintaining an organized and traceable system.

Automatic generation of sequential numbers is essential in various business processes, as it contributes to effective record-keeping and reporting. By automating this process, organizations can avoid errors that might occur from manual entry or overrides and can ensure compliance with accounting and auditing standards.

The other options either do not facilitate a sequential numbering system or introduce potential complications into the transaction-numbering process. For instance, allowing users to override the default number could lead to inconsistencies and disrupt the necessary sequence. Disabling numbering could cause ambiguity in transaction records, while using placeholders does not inherently enforce a sequential format, which is vital for tracking and referencing transactions accurately.