How To Fix /SAPAPO/AMON_ALERTS521 - Open PO quantity < TLB quantity

/SAPAPO/AMON_ALERTS521 - Overview

• Message type: E = Error

• Message class: /SAPAPO/AMON_ALERTS -

• Message number: 521

• Message text: Open PO quantity < TLB quantity

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/AMON_ALERTS521 - Open PO quantity < TLB quantity ?

  The SAP error message /SAPAPO/AMON_ALERTS521 indicates that there is a discrepancy between the open purchase order (PO) quantity and the quantity determined by the Transportation Load Builder (TLB) in the Advanced Planning and Optimization (APO) module. This alert typically arises in the context of supply chain management, where accurate alignment between demand and supply is crucial.
  
  Cause:
  
  
  Mismatch in Quantities: The open PO quantity is less than the quantity that the TLB has calculated as needed for fulfilling demand. This can happen due to:
  
  Changes in demand forecasts that were not reflected in the purchase orders.
  Delays or cancellations of existing purchase orders.
  Incorrect settings in the planning parameters or master data.
  
  
  
  Planning Parameters: The planning parameters for the TLB might not be set correctly, leading to an overestimation of the required quantities.
  
  
  Data Inconsistencies: There may be inconsistencies in the master data, such as incorrect lead times, safety stock levels, or other relevant parameters.
  
  
  
  Solution:
  
  
  Review Open Purchase