SAP Knowledge Base Article - Public

3040629 - Error message encountered when maintaining MX1 of Mexico tax number

Symptom

When maintaining Tax Category: MX1 of Mexico tax number, the error message: Tax code 1 is not valid (Message no. AR129) occurs.

Environment

SAP S/4HANA Cloud

Reproducing the Issue

  1. Open Maintain Business Partner app.
  2. Select a business partner.
  3. Switch between display to change mode.
  4. Go to the Identification Tab and scroll down to the Tax numbers Section.
  5. Enter Tax Category: MX1 and Tax number.
  6. Press Check / Save button.

Cause

Tax number does not meet the requirements set by SAP.

Resolution

Tax number will have different filling requirements according to whether natural person is selected:

  • If you activate the Natural Person checkbox:
  1. The length of tax number must be 12.
  2. The first 4 digits of the Tax Number must be letters and 5 digit to 10 digit of the tax number must be numbers.
  • If you inactivate the Natural Person checkbox:
  1. The length of tax number must be 13.
  2. The first 3 digits of the Tax Number must be letters and 4 digit to 9 digit of the tax number must be numbers.

Keywords

S4_PC, AP-MD-BP, BP, Business Partner, maintain, tax, tax category, MX1, MX, Mexico, AR129, code, valid, Natural Person, tax number , KBA , AP-MD-BP-TAX , Tax Data , Problem

Product

SAP S/4HANA Cloud all versions