Message type: E = Error
Message class: W0 - Customizing - ISR
Message number: 021
Message text: No materials assigned to layout module &
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W0021
- No materials assigned to layout module & ?SAP Error Message: W0021 No materials assigned to layout module &
Cause: This warning message typically occurs in SAP when a layout module (often related to production, planning, or packaging processes) is expected to have one or more materials assigned to it, but currently, no materials are linked or assigned. In other words, the system is indicating that the layout module configuration is incomplete or missing material assignments, which are necessary for the process or transaction to proceed correctly. When does it occur? During production order processing or packaging configuration. When working with layout modules in SAP PP (Production Planning) or SAP LE (Logistics Execution). When defining or using layout modules in packaging or handling unit management. Possibly during master data setup or when running certain reports or transactions that require layout module-material linkage.
Solution: Check Layout Module Configuration: Go to the customizing or master data maintenance for layout modules. Verify if the layout module in question has materials assigned. Assign the relevant materials
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