| statements: | PU |
| dependencies: | VTAM® only; LUGROUP |
Provides a 1–8 character pattern name that the SDDLU exit routine uses to generate an LU name when dynamically defining an LU. LUSEED is valid only when you code the LUGROUP operand.
If you use the IBM-supplied SDDLU exit routine, this operand
is required and must have the following format:
- The first character must be either alphabetical or one of the national characters (@ or $).
- The remaining characters can be either alphabetical, numerical, or national.
- There must be either two or three contiguous national # characters in the name. These characters represent holders, in which the logical unit's local address is substituted when an LU's name is generated. If you specify three # characters, the LU's logical address is substituted in decimal for the # characters. If you specify two # characters, the LU's logical address is substituted in hexadecimal for the # characters.
When used with a user-written SDDLU exit routine, this operand is optional and there are no restrictions on its format. For more information on the SDDLU exit, see z/OS Communications Server: SNA Customization.