GETWA_NOT_ASSIGNED while executing VF21

Hi Experts,

While trying to create a invoice list in T-Code VF21, I am getting a runtime error

GETWA_NOT_ASSIGNED, Dump informatation suggests to find SAP note for following keywords

-

"GETWA_NOT_ASSIGNED" C

"SAPLV60A" or "LV60AA09"

"BELEG_SPERREN_VBRK"

-

Please note that account assignment group has been correctly maintained in VKOA.

I would appreciate if you could provide me suitable pointers for its root cause.

Thanks in advance

Regards

Harpreet