Message type: E = Error
Message class:  PPH_MASTER_RECIPE - Master Recipe API 
Message number: 088
Message text: Secondary resource item(Operation) cannot be blank
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The SAP error message PPH_MASTER_RECIPE088 indicates that a secondary resource item (operation) is missing or not specified in the context of a master recipe. This error typically occurs in the Production Planning (PP) or Process Industries (PP-PI) modules when working with master recipes, which are used to define the production process for a product.
Cause: The error is triggered when: A secondary resource (like a machine, labor, or other resources) is expected to be defined for an operation in the master recipe, but it has not been specified. The configuration of the master recipe is incomplete, particularly in the operations section where secondary resources should be assigned.
Solution: To resolve this error, you can follow these steps: Check the Master Recipe: Go to the transaction code C201 (or use the appropriate transaction for your version of SAP). Open the master recipe that is causing the error. Navigate to the operations section of the master recipe. Define Secondary Resources: Ensure that all operations
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