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

V1634 - Overview

• 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