Is it a Storeable class Limitation in BRM?

Hi there,

I am trying to create a custom class with 3 sub-class, for which BRM is not allowing.

wanted to create like this.

0 PIN_FLD_POID           POID [0] 0.0.0.1 /config/output_ref_data 20001 1

0 PIN_FLD_TYPES         ARRAY [1] allocated 20, used 1

1     PIN_FLD_SUB_TYPES     ARRAY [1] allocated 20, used 1

2         PIN_FLD_STATES        ARRAY [9] allocated 20, used 7

3             PIN_FLD_FORMAT_STR      STR [0] "09-1"

3             PIN_FLD_GEOCODE         STR [0] "090000000"

3             PIN_FLD_SUBTYPE        ENUM [0] 1

3             PIN_FLD_TYPE           ENUM [0] 1

3             PIN_FLD_GL_ID           INT [0] 46319110

3             PIN_FLD_RECORD_TYPE     STR [0] "Invoice"

3             PIN_FLD_PROVIDER_DESCR    STR [0] ""

Is it a BRM restriction, if yes, is there a way to achieve this  ???

Regards,

Prasannakanth T