trn_optimum_item definition use defaults, because of invalid variable. server: aa...aa

The system uses the default (base) to execute the corresponding server's transaction because an invalid value has been specified as the value in the trn_optimum_item operand of the user service definition, user service default definition, or transaction service definition.

aa...aa: Server name (up to 8 alphanumeric characters) with the error.

Countermeasure: Review the definition, take corrective action, and activate the corresponding server again.