As shown in the following table, for every ASN.1 simple type except Real, there is an OM syntax that is functionally equivalent to it. The simple types are listed in the first column of the table; the corresponding syntaxes are listed in the second column.
Syntax for ASN.1 Simple Types
| Type | Syntax |
| Bit String | String(OM_S_BIT_STRING) |
| Boolean | OM_S_BOOLEAN |
| Integer | OM_S_INTEGER |
| Null | OM_S_NULL |
| Object Identifier | String(OM_S_OBJECT_IDENTIFIER_STRING) |
| Octet String | String(OM_S_OCTET_STRING) |
| Real | None Note: A future edition of XOM may define a syntax corresponding to this type. |