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To allocate a client id, use the MF_CLIENT_STATE_ALLOCATE routine. For example:

 working-storage section. 
 ...
 01 client-id                pic x(30).
 01 client-length            pic xxxx comp-x.
 01 state-status             pic x comp-x.
 ...
 procedure division. 
 ...
 call "MF_CLIENT_STATE_ALLOCATE"
      using client-id client-length state-status

 ...

The MF_CLIENT_STATE_ALLOCATE does two things:

• Allocates a new empty record for the state information, with the length given in CLIENT_LENGTH.
• Returns a new client id if the value passed in CLIENT-ID is set to spaces. If CLIENT-ID is already set to a valid client-id, this call returns an error code in state-status.

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