Incorrect NRC
This error can occur when signing and sending a declaration with a result to be entered and is due to the NRC being incorrect or not corresponding to the declared data.
NRC has been completed incorrectly
Check that you have correctly transferred each of the 22 characters of the NRC obtained when making the payment to the declaration.
The NRC consists of 22 alphanumeric characters and, generally, the first three coincide with the model number to which the entry corresponds (example: 303…).
The details entered in the tax return do not exactly match those of the payment.
You must access the query of the payment made and ensure that the data ( NIF , model, amount, fiscal year and period) are correct and identical to those recorded in the declaration.
Pay particular attention to the period, as it is common to confuse quarterly periods (Q1, Q2, Q3 and Q4) with monthly periods (01: January, 02: February, 03: March, 04: April, etc.).
You must also check that the amount paid exactly matches the amount declared (a difference of 1 cent will invalidate the NRC ) and review the rest of the related data to detect possible errors.
If the deposit has been made through the AEAT payment gateway, the receipt of the operation can be recovered, with the NRC assigned and all payment details, from option " Self-assessments. Consultation of a previous payment" (by account or card charge, as appropriate).
If you observe any error in these data, you can contact the corresponding banking entity directly and request the cancellation of the erroneous NRC , as well as the generation of a new NRC correct to be able to make the presentation.
Note: It must be taken into account that the cancellation of a NRC requires appearing at the bank or savings bank office in the shortest possible time. Otherwise, a "Refund of undue payments" request will be required.