The guidance for this is:
You must not change any amounts or dates relating to financial records with dates in previous ILR years. If you identify a data error after the close of a previous ILR year, you must add a new financial record with a date in the current ILR year.
152. For changes in total price, we will apply the new price from the ‘financial record date’ in the ILR (After applying the funding band maximum, we will subtract any earnings to date and 20% of the new total price for completion. We will spread the remainder equally over the remaining planned duration.
If you give it an hour (as it needs time to update DAS) and then check your training provider DAS account, Manage your apprentices and filter by Alerts ILR data mismatch and view the records you can ‘Request the details are updated to match the ILR’ if you need to do this to correct the error.