When a Technical Committee decides that a Preliminary specification is ready for advancing to Experimental status, then it submits the specification to the FIPA Architecture Board for approval. Upon successful approval, the specification achieves Experimental status and a new informal document identifier (beginning with ‘X’ instead of ‘P’).
An Experimental status specification is considered a stable specification for a period of two years, or until they are promoted to Standard status. During this time, only minor changes to the specification are permitted through the approval of the FIPA Architecture Board. All Experimental specifications have an informal specification identifier that begins with ‘X’.
Specifications which have attained the status of Experimental are deemed suitable for implementation within FIPA-compliant agent platforms. Sufficient implementations of an Experimental specification and feedback from those implementations determine when a specification can be submitted as a Standard.