-554 AN AUTHORIZATION ID OR ROLE CANNOT GRANT A PRIVILEGE TO ITSELF

Explanation
  An authorization ID or a role
attempted to execute a GRANT statement in which that ID itself appears
as one of the entries in the list of 'grantee' authorization IDs or
role names.
  An authorization ID or a role cannot GRANT a privilege
to itself. However, if SQLRULES(STD) is in effect or CURRENT RULES
contains STD, GRANT to self is allowed.

System action
  The statement cannot be processed. No
privileges were granted.

Programmer response
  Remove the reference to the authorization
ID that issued the GRANT statement from the list of grantee authorization
IDs.

SQLSTATE
  42502