Testimony is built to function on a central system which records one or more source systems and plays back that recording into one or more target systems. These 3 system types would typically be separate systems. All of the systems must be ABAP stack and on Netweaver release 7.01 and above.
In the case of S/4 HANA systems (1610, 1709, 1809 and 1909), it is possible to install Testimony for recording and playback purposes. The central system would traditionally be a separate Solution Manager system.
Before you record your S/4 HANA (or NW 7.53+ kernel) system, please liaise with Basis Technologies who will provide you with an additional transport request that should be applied to both your central system and your source S/4 HANA system. The same transport should then be applied to your S/4 HANA playback system prior to starting a playback.
This transport should be applied on top of the main recording transport request into that system.