Update file _3gpp-5gc-nrm-amffunction.yang

          type string{

            pattern '^(MacroNGeNB-[A-Fa-f0-9]{5}|LMacroNGeNB-[A-Fa-f0-9]{6}|SMacroNGeNB-[A-Fa-f0-9]{5})$';

          }

          description "This represents the identifier of the ng-eNB ID as specified in clause 9.3.1.8 of 

          3GPP TS 38.413. The value of the ng-eNB ID shall be encoded in hexadecimal representation. 

          Each character in the string shall take a value of "0" to "9", "a" to "f" or "A" to "F" and 

          shall represent 4 bits. The padding 0 shall be added to make multiple nibbles, so the most 

          significant character representing the padding 0 if required together with the 4 most 

          significant bits of the ng-eNB ID shall appear first in the string, and the character 

          representing the 4 least significant bit of the ng-eNB ID (to form a nibble) shall appear

          last in the string.";

          description "This represents the identifier of the ng-eNB ID as specified in clause 9.3.1.8 of 3GPP TS 38.413.";

          mandatory true;

        }

      }