Conversion Routine MATN1 is not working

Dear All,

When material no. is more than 18 character then in BI conversion Routine is not working means it is putting as "!" whereas in R/3 for same datasource in RSA3 it is showing correct material no. Due to this the user is not able to see the correct material code in the report. Also in OMSL length given as 18 char.

DS: 0MATERIAL_ATTR

R/3 RSA3 O/p:

DS PSA Maintenance:

Could anyone please suggest that what can be done.

.

Regards,

Abhishek Jain