How To Fix /SAPAPO/SEQ551 - Prod. &1/loc. &2 without valid source in opt. horizon is not planned

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/SEQ -

• Message number: 551

• Message text: Prod. &1/loc. &2 without valid source in opt. horizon is not planned

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/SEQ551 - Prod. &1/loc. &2 without valid source in opt. horizon is not planned ?

  The SAP error message /SAPAPO/SEQ551 Prod. &1/loc. &2 without valid source in opt. horizon is not planned typically occurs in the SAP Advanced Planning and Optimization (APO) module, particularly in the context of production planning and scheduling. This error indicates that a product at a specific location does not have a valid source of supply within the defined planning horizon, which prevents it from being planned.
  Cause:
  
  No Valid Source of Supply: The product at the specified location does not have any valid source of supply (e.g., production orders, purchase orders, or stock) that can fulfill the demand within the planning horizon.
  Planning Horizon Issues: The planning horizon may not be set correctly, or the product may not be available for planning within that horizon.
  Master Data Issues: There may be issues with the master data configuration, such as missing or incorrect data in the product master, location master, or source of supply.
  Capacity Constraints: There may be capacity constraints that prevent the product from being planned at the specified location.
  
  Solution:
  
  Check Source of Supply: Verify that there is a valid source of supply for the product at the specified location. This can include checking production plans, purchase orders, or stock levels.
  Adjust Planning Horizon: Ensure that the planning horizon is set appropriately in the planning settings. You may need to extend the planning horizon to include the required time frame.
  Review Master Data: Check the master data for the product and location to ensure that all necessary information is correctly maintained. This includes checking the product's sourcing information and ensuring that the location is set up correctly.
  Capacity Planning: Review capacity planning settings to ensure that there are no constraints that would prevent the product from being planned. This may involve checking production resources and their availability.
  Run Planning Again: After making the necessary adjustments, run the planning process again to see if the error persists.
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like /SAPAPO/SDP94 (for planning board) or /SAPAPO/MC90 (for checking planning results) to analyze the planning situation.
  Master Data Maintenance: Ensure that the relevant master data (product master, location master, etc.) is maintained correctly in the system.
  Planning Books and Data Views: Check the planning books and data views to ensure that the relevant data is being considered during the planning run.
  SAP Notes: Look for any relevant SAP Notes that may address specific issues related to this error message.
  
  By following these steps, you should be able to identify the root cause of the error and implement the necessary solutions to resolve it.