Record IDs

Database record identifiers (IDs) and tape record IDs are defined within a specific range, unless otherwise noted as a deviation.

Database record IDs

All new database record IDs used by the z/TPF system will fall in the following ranges:
  • X'0000' to X'00FF'
  • X'FC00' to X'FFFF'

Current record IDs that fall outside this range will not be changed at this time to comply with this standard. For a list of existing database record IDs that deviate from this standard, see Existing database record ID deviations.

Notes:
  1. If possible, use the existing database record types #IBMMS, #IBMML, #IBMMP4, and #IBMM4. Creating a new FACE record type might waste file addresses because more file addresses might be assigned for a new record type than are needed for a specific application.
  2. X'0000' cannot be used by the z/TPFDF product.

Tape record IDs

All new tape record IDs that are used by the z/TPF system will fall in the following ranges:
  • X'EA00' to X'EFFF'

Current record IDs that fall outside this range will not be changed at this time to comply with this standard. For a list of existing tape record IDs that deviate from this standard, see Deviations for record IDs used for RTA/RTL tape.