Sussex will face no punishment despite the pitch for their Championship match against Warwickshire at Hove last week being rated as "poor" by the umpires.
Sussex beat the Bears inside three days, with neither side scoring more than 200 runs in either innings.
The England & Wales Cricket Board requires that counties "shall actively prepare the best quality pitch that it can" for matches they stage.
A committee found there was no evidence Sussex had breached this requirement.
A report on the pitch was submitted to the chairman of the ECB's Cricket Discipline Commission (CDC), while the ECB's pitch consultant also visited Hove and submitted a separate report.
Penalties are only applied by the CDC when a pitch is rated "poor" or "unfit", and where a county did not seek to prepare the best quality pitch for the match.