The present document provides the Implementation Conformance Statement (ICS) proforma for the conformance test suite for TTCN-3 as defined in ES 201 873-1 [1] in compliance with the relevant guidance given in the proforma for TTCN-3 reference test suite TS 102 995 [4]. In the present document only the core language features@ specified in ES 201 873-1 [1] have been considered but not the tool implementation (see [i.1] and [i.2])@ language mapping (see [i.3]@ [i.4] and [i.5]) and language extension (see e.g. [i.6]@ [i.7] and [i.8]) aspects. The supplier of an implementation which is claimed to conform to ES 201 873-1 [1] is required to complete a copy of the ICS proforma provided in the annex A of the present document.