I misunderstood what you were trying to say. You can't find the DD name in the 
TIOT after SVC 99 allocation? Odd. Hard to fathom.

Do you have that flag turned on that allocates XTIOTs?

Charles

On Wed, 15 Jul 2026 18:02:14 -0400, Joseph Reichman <[email protected]> 
wrote:

>Hi 
>
>I am trying to read dscb from the vtoc
>
>So I allocate dalddnam daldsnam dalvolser
>Dalstats 
>
>
>I get a return code 0 from SVC 99 
>
>I am running this under tso test and I scan the tiot  afterwards and cannt 
>find my ddname vtocdd
>
>Thanks 
>
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