How To Fix B1870 - Note: The ALE interface must be regenerated afterwards

SAP Error Message - Details

• Message type: E = Error

• Message class: B1 - ALE group messages

• Message number: 870

• Message text: Note: The ALE interface must be regenerated afterwards

What causes this issue?

An ALE interface has already been generated for the BAPI (&v1&, &v2&).
The function module &v3& must be regenerated, if the hierarchical
dependencies between the table parameters have changed.

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 B1870 - Note: The ALE interface must be regenerated afterwards ?

  The SAP error message B1870 typically indicates that there is an issue with the Application Link Enabling (ALE) interface in your SAP system. This error often arises when there are changes made to the data structures or the configuration of the ALE interface, which necessitates a regeneration of the interface to ensure that it functions correctly.
  
  Cause:
  
  Changes in Data Structures: If there have been changes to the underlying data structures (like adding or modifying fields in a table), the ALE interface may become outdated.
  Configuration Changes: Changes in the configuration of the ALE settings, such as message types or distribution model, can also lead to this error.
  Inconsistencies: If there are inconsistencies in the ALE configuration or if the necessary objects are not activated, this error can occur.
  
  
  Solution:
  To resolve the B1870 error, you need to regenerate the ALE interface. Here are the steps to do this:
  
  Access the Transaction Code: Use transaction code WE30