A record looks wrong, three people had edit access, and nobody remembers who touched it last.
Standard Salesforce field history tracking caps at 20 fields per object and keeps changes for only 18 months, with no real reporting layer beyond a related list on one record at a time. For any team where a data dispute carries business or legal weight, that ceiling turns into exactly the question the system can't answer.
Where the built-in limit actually bites
Twenty fields per object isn't much when a sales team, an ops team, and a support team are all working the same object with different fields they each care about. Eighteen months is short for anything spanning a full contract or customer relationship. And the related list view works fine for looking up one record, but it isn't a reporting surface, so there's no way to ask which fields changed most last quarter or which users made the most edits.
Picture a deal that closed at one amount, and three weeks later the Opportunity shows a lower number. The rep says it was changed without authorization. The manager disagrees. If that field wasn't one of the 20 tracked, or the change happened during a bulk import, or it happened outside the 18-month window, there's no verifiable record. The dispute gets settled by whoever argues harder, not by data.
How True Field History extends it
A compliance team asking for the full change history on a contract from two years back used to get the same answer every time. Native tracking had already purged it, or the field in question was never one of the 20.
With True Field History, that request becomes a Salesforce report showing every value, user, and timestamp involved, ready in minutes instead of stalling a finance or healthcare audit.
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