Program error: ASSIGN with length 0 in program "SAPLRSDMDSP04".

Dear Experts.

Today i got production issues while changing the PSA data getting ABAP run time error and provisionally (1 moth back) i changed same PSA data in PRD. i checked all data source what ever i am using all data source same problem and getting Program error: ASSIGN with length 0 in program "SAPLRSDMDSP04".

if i changed on the PSA record its happen. have you aware of this error and please help.

please find the screen shots.

Thanks,

Phani.