How To Fix FDT_CORE421 - AIM details for transport object &1 are incorrect; see long text

FDT_CORE421 - Overview

• Message type: E = Error

• Message class: FDT_CORE - Formula & Derivation Tool: Core

• Message number: 421

• Message text: AIM details for transport object &1 are incorrect; see long text

What causes this issue?

Transport object &v1& is assigned to a BRFplus expression type, but the
after import details (AIM) for transport object &v1& are missing, or are
not maintained correctly in transaction SOBJ.

System Response

The BRFplus expression type has a syntax error.

How to fix this error?

To solve this issue, proceed as follows:
Start transaction SOBJ.
Navigate to the <ZH>Methods</> area for transport object &v1&.
Choose <ZH>AIM Details</>.
In the <ZH>Reference to Other AIM</> area, enter the reference transport
object &v2& as <ZH>Object</>, and choose "Individual transaction object"
as <ZH>Type
</>.

Procedure for System Administrators

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.

FDT_CORE421 - Details

• The SAP error message FDT_CORE421 indicates that there is an issue with the transport object details in the context of the SAP Fiori Design Time (FDT) framework. This error typically arises when the transport object (like a transport request or a transport package) is not correctly configured or has missing or incorrect information.
  
  Cause:
  
  Incorrect Transport Object: The transport object specified may not exist or may not be correctly defined in the system.
  Missing Attributes: Required attributes or details for the transport object may be missing or incorrectly set.
  Transport Request Issues: The transport request may be locked, not released, or in a state that prevents it from being processed.
  Authorization Issues: The user may not have the necessary authorizations to access or modify the transport object.
  System Configuration: There may be configuration issues in the transport management system (TMS) or related settings.
  
  
  Solution:
  
  Check Transport Object: Verify that the transport object (e.g., transport request) exists and is