Runtime error for custom field FCODE addition in CJ12 tcode

[mukeshponraj1234]

Hello All,

I have added a custom field in SAPLXCN1 with dropdown and description for the field

(PRPS-tech class and the description).

For tech class, Fcode is set as UPD for dynamic selection of description for the field in tcode CJ20N.

Now, when we open tcode CJ12 ( change for WBS), and when we select the dropdown for tech class and change value for, it goes for dump

On debugging the same, the FCODE entry UPD is not available in T185 and T185F table, due to which the dump occurred.

Even after maintaining the table entry during runtime, the dropdown values are not being updated.

Kindly assist for the same, as the custom FCODE which was created in CJ20N is giving dump in CJ12.