Availability Control
Availability Control (AVAC) is the SAP Project System budgeting safeguard that continuously compares assigned budget against actual and committed values on projects, triggering warnings or blocking postings when defined tolerance thresholds are breached. This topic covers the business purpose of AVAC, its configuration building blocks (tolerance limits, activation, action types), the runtime document flow during postings, integration with FI/MM/CO, troubleshooting activation and update issues, and how behavior differs across ECC, S/4HANA on-premise/private cloud and public cloud EPPM.
Overview
Availability Control (AVAC) is the SAP Project System budgeting safeguard that continuously compares assigned budget against actual and committed values on projects, triggering warnings or blocking postings when defined tolerance thresholds are breached. This topic covers the business purpose of AVAC, its configuration building blocks (tolerance limits, activation, action types), the runtime document flow during postings, integration with FI/MM/CO, troubleshooting activation and update issues, and how behavior differs across ECC, S/4HANA on-premise/private cloud and public cloud EPPM.
Lessons in this topic
- Configuring Tolerance Limits and Activating Availability ControlA practical walkthrough of configuring Availability Control for SAP Project System: defining tolerance limits by budget type and action, activating AVAC per controlling area and budget profile, and verifying the configuration through test postings.
- Troubleshooting Availability Control: Activation Errors, Tolerance Tuning and Production SupportLearn how to diagnose and resolve common Availability Control issues in live projects, tune tolerance limits without disrupting operations, and understand how AVAC behaves differently in S/4HANA versus ECC during day-to-day production support.
- What Availability Control Is and Why Projects Depend On ItAn introduction to Availability Control (AVAC) in SAP Project System: the business problem it solves, the core concepts of budget, actual, commitment and assigned values, and how tolerance-based warnings and errors protect project spending discipline.