CONVERSION_EXIT_ABPSP_OUTPUT

Hi,

In bapi we required wbs element for employees,we got the same from hrt1018-posnr.

data element used is PS_POSNR which has Convers. Routine .

bapi when called from other non sap application doesnot return proper value.

hence we used CONVERSION_EXIT_ABPSP_OUTPUT to resolve the problem.

required value : MLTD-000009

but now we are getting only 000009

initial data type was numc length 8 hence we created a new data element with char 24 length.

after activating ther o/p structure , we are getting error

BAPI-structure: invalid change: length of field WBS was changed

How to resolve the above issue?