How To Fix V1634 - A JIT delivery schedule already exists-entry is cancelled

SAP Error Message - Details

• Message type: E = Error

• Message class: V1 - Verkaufsbelegbearbeitung

• Message number: 634

• Message text: A JIT delivery schedule already exists-entry is cancelled

What causes this issue?

The MRP handling indicator E does not allow any JIT delivery schedules.
However there is a JIT delivery schedule in at least one item (item
&V1&) in the scheduling agreement.

System Response

The system ignores the entry.

How to fix this error?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message V1634 - A JIT delivery schedule already exists-entry is cancelled ?

  The SAP error message V1634, which states "A JIT delivery schedule already exists - entry is cancelled," typically occurs in the context of Just-In-Time (JIT) delivery scheduling in SAP. This error indicates that there is an attempt to create or modify a JIT delivery schedule for a material that already has an existing schedule in the system.
  Cause:
  
  Existing JIT Schedule: The primary cause of this error is that there is already a JIT delivery schedule for the specified material and vendor combination. SAP prevents the creation of duplicate schedules to maintain data integrity.
  Incorrect Data Entry: Sometimes, the error can arise from incorrect data entry or configuration issues, such as trying to create a schedule for a material that is not set up for JIT delivery.
  System Configuration: There may be configuration settings in the JIT scheduling that are not aligned with the current business processes or requirements.
  
  Solution:
  
  
  Check Existing JIT Schedules: 
  
  Use transaction codes like MD04 (Stock/Requirements List) or JIT1 (JIT Delivery Schedule) to check if there is already an existing JIT delivery schedule for the material in question.
  If a schedule exists, review it to determine if it needs to be modified or if a new schedule is indeed necessary.
  
  
  
  Modify Existing Schedule: 
  
  If you need to change the existing JIT delivery schedule, you can do so using the appropriate transaction (e.g., JIT1 or JIT2 for modifying schedules).
  Ensure that any changes comply with the business requirements and that they do not conflict with existing schedules.
  
  
  
  Delete Existing Schedule: 
  
  If the existing schedule is no longer needed, you may delete it (if permitted) and then create a new JIT delivery schedule.
  Be cautious with deletions to avoid disrupting supply chain processes.
  
  
  
  Consult Documentation: 
  
  Review SAP documentation or your organization's internal guidelines regarding JIT delivery scheduling to ensure compliance with best practices.
  
  
  
  Check Configuration: 
  
  If the issue persists, consult with your SAP Basis or configuration team to ensure that the JIT settings are correctly configured in the system.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MD04, JIT1, JIT2, and ME38 (for scheduling agreements).
  SAP Notes: Check SAP Notes for any known issues or patches related to JIT scheduling that may address this error.
  User Roles and Authorizations: Ensure that you have the necessary authorizations to view and modify JIT delivery schedules.
  
  By following these steps, you should be able to resolve the V1634 error and manage JIT delivery schedules effectively in SAP.