SAP Message R1249 - Business partner number &1 is not permitted

Diagnosis
Inside the system, different business partner numbers are used tomanage business partners created with internal number assignment. Youcannot enter these business partner numbers for this reason.
The following business partner numbers are not allowed:

  • Numbers beginning with the prefix '#' or '!'

  • Numbers enclosed by the '<' and '>' characters
  • System Response
    Error message

    Procedure
    Enter a different business partner number.