Execution within client &2 of system &1. Host was &3.

Message type: E = Error

Message class: SABP_UNIT_CHECKMAN - Error Texts for Adapter ABAP Unit to CheckMan

Message number: 400

Message text: Execution within client &2 of system &1. Host was &3.



What causes this issue?

Unlike most of the static tests running ABAP Unit may have dependencies
to machine or client where it was executed. So in case you cannot
reproduce a certain error please make sure that you also try the same
system and host.

Error message extract from SAP system. Copyright SAP SE.