In which system the user acceptance test is done?
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EAD
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EAP
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EAQ
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EAR
User Acceptance Testing (UAT) is performed in the EAQ (Quality Assurance) system. EAD typically refers to Development, EAP to Prototype/Pre-production, and EAR to Recovery or another environment. UAT is the final testing phase before production deployment.
In a standard three-tier SAP system landscape (Development → Quality/Test → Production), user acceptance testing (UAT) is performed in the Quality Assurance system, not directly in Development or Production, to validate business processes in a stable, production-like environment without risking live data. Here the systems are named EAD, EAP, EAQ, and EAR — following typical SAP naming conventions where the middle letter/suffix often denotes the system role (D=Dev, Q=QAS/Quality, P=Production), 'EAQ' (Quality system) is the logical candidate for UAT, matching the marked answer. This mapping is specific to this client's system landscape naming, so confidence is moderate rather than certain.