How To Fix IW751 - Scheduling will be changed to reflect inclusion of relationships

SAP Error Message - Details

• Message type: E = Error

• Message class: IW - Order Processing

• Message number: 751

• Message text: Scheduling will be changed to reflect inclusion of relationships

What causes this issue?

One of the following has occurred:
You have created <GL:relationship>relationships</> in the order.
You have copied a <GL:maintenance_task_list>maintenance task list</>
containing relationships into the order.
You are trying to process an order that previously had no relationships
but for which relationships have been created from other orders.

System Response

The system will change scheduling so that the relationships are taken
into account when the order is scheduled.
<ZH>Caution</>
The system will regard all operations for which no relationships have
created as start activities. If you work with relationships and want to
carry out scheduling, it is recommended that you assign relationships
to all the operations.

How to fix this error?

If you want to schedule your order in such a way that the relationships
are <ZH>not</> taken into account, you must delete all the
relationships.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message IW751 - Scheduling will be changed to reflect inclusion of relationships ?

  The SAP error message IW751 indicates that the scheduling of a maintenance order or operation will be adjusted to account for the relationships defined between tasks or operations. This message typically arises in the context of maintenance planning and scheduling within the SAP system, particularly when using the PM (Plant Maintenance) module.
  Cause:
  The error message IW751 is not necessarily an error in the traditional sense but rather an informational message. It occurs when:
  
  Dependencies Exist: There are defined relationships (such as predecessor/successor relationships) between operations or tasks in the maintenance order.
  Scheduling Changes: The system is recalculating the schedule to accommodate these relationships, which may lead to changes in the start and finish dates of the operations.
  
  Solution:
  To address the IW751 message, consider the following steps:
  
  
  Review Relationships: Check the relationships defined in the maintenance order. Ensure that they are set up correctly and that they reflect the intended sequence of operations.
  
  
  Re-schedule the Order: If you want to see the updated schedule reflecting the relationships, you may need to re-schedule the maintenance order. This can typically be done through the transaction code IW32 (Change Order) or IW31 (Create Order).
  
  
  Check Scheduling Parameters: Ensure that the scheduling parameters (like lead times, float times, etc.) are correctly configured. This can affect how the system calculates the schedule.
  
  
  Analyze the Impact: Understand how the changes in scheduling will impact the overall maintenance plan and resource allocation. 
  
  
  Consult Documentation: Refer to SAP documentation or help files for more detailed information on scheduling and relationships in maintenance orders.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as IW31 (Create Order), IW32 (Change Order), IW33 (Display Order), and IP10 (Schedule Maintenance Plan).
  SAP Notes: Check for any SAP Notes related to scheduling and maintenance orders that might provide additional insights or fixes.
  Training and Support: If you are part of an organization using SAP, consider reaching out to your SAP support team or consulting with a SAP PM module expert for further assistance.
  
  This message is a reminder to users that the scheduling process is dynamic and can change based on the relationships defined in the maintenance order. It is essential to ensure that all dependencies are correctly set up to avoid scheduling conflicts.