How To Fix 29088 - Only negative quantities supported for co-product

SAP Error Message - Details

• Message type: E = Error

• Message class: 29 - Bills of Material

• Message number: 088

• Message text: Only negative quantities supported for co-product

What causes this issue?

You have marked this item as a co-product. Such items are treated as
material credit memos by costing, which reduces the manufacturing costs
calculated.

System Response

Co-products are entered as a <ZH>negative</> quantity.

How to fix this error?

You did not enter a negative quantity.
Please enter a negative quantity.
Example: <LB>100-</>

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 29088 - Only negative quantities supported for co-product ?

  The SAP error message 29088, "Only negative quantities supported for co-product," typically occurs in the context of production orders or process orders when dealing with co-products in SAP's Production Planning (PP) or Process Industry (PI) modules. This error indicates that the system is expecting a negative quantity for a co-product, which is often related to the way co-products are defined and handled in the production process.
  Cause:
  
  Co-Product Definition: In SAP, co-products are defined in the material master and production process. If the system is set up to expect a negative quantity for a co-product, it may be due to the way the co-product is configured in the bill of materials (BOM) or routing.
  Production Order Settings: The production order may be incorrectly set up, leading to the expectation of negative quantities for co-products.
  Incorrect Quantity Input: The user may have inadvertently entered a positive quantity for a co-product when the system is configured to only accept negative quantities.
  
  Solution:
  
  
  Check Co-Product Configuration:
  
  Review the material master data for the co-product to ensure it is correctly defined.
  Check the BOM and routing to confirm that the co-product is set up properly and that the expected quantities are defined correctly.
  
  
  
  Adjust Production Order:
  
  If you are creating or modifying a production order, ensure that the quantities for co-products are entered as negative if that is the requirement of your configuration.
  If the system is incorrectly expecting a negative quantity, you may need to adjust the settings in the production order or the related master data.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or help resources related to co-products and production orders to understand the specific requirements and configurations needed for your scenario.
  
  
  
  SAP Notes and Support:
  
  Check for any relevant SAP Notes that may address this issue or provide guidance on how to resolve it.
  If the problem persists, consider reaching out to SAP support for assistance.
  
  
  
  Related Information:
  
  Co-Products in SAP: Co-products are materials that are produced simultaneously in a production process. They can have different characteristics and may require specific handling in terms of inventory and production planning.
  Negative Quantities: In some production scenarios, negative quantities are used to indicate the output of by-products or co-products, which may not be the primary product of the production order.
  Configuration Settings: The configuration of co-products can be found in the SAP Customizing Implementation Guide (IMG) under the relevant sections for Production Planning and Process Management.
  
  By addressing the configuration and ensuring that the quantities are entered correctly, you should be able to resolve the error message 29088.