How To Fix CFD_ABAP_MANAGED_FLD000 - ABAP dictionary data type &1 is not supported.

SAP Error Message - Details

• Message type: E = Error

• Message class: CFD_ABAP_MANAGED_FLD - Custom Fields: Messages of ABAP-Managed Fields

• Message number: 000

• Message text: ABAP dictionary data type &1 is not supported.

What causes this issue?

Most ABAP dictionary data types are supported by the app <ZK>Custom
Fields and Logic</>.
<ZH>Not supported </>are obsolete data types like PREC, binary/character
large objects (BLOBs and CLOBs) like STRING, technical data types like
CLNT, and data types which require a preceding field for length
specification like LCHR.

System Response

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

How to fix this error?

You may want to check whether the data type of your current database
field can be changed to a supported data type without data loss. Please
refer to the ABAP Dictionary documentation in order to check whether
this requirement can be fulfilled.
Otherwise, your database field cannot be enabled for use in app
<ZK>Custom Fields and Logic</>.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CFD_ABAP_MANAGED_FLD000 - ABAP dictionary data type &1 is not supported. ?

  The SAP error message CFD_ABAP_MANAGED_FLD000 indicates that there is an issue with the ABAP dictionary data type being used in a context where it is not supported. This error typically arises when working with ABAP Managed Database Procedures (AMDP) or when trying to use certain data types in contexts that do not support them.
  
  Cause:
  
  Unsupported Data Type: The error usually occurs when you are trying to use a data type in ABAP that is not supported by the context in which you are working. For example, certain complex data types or reference types may not be allowed in AMDP or other specific scenarios.
  Incompatibility with AMDP: If you are using AMDP, it is important to ensure that the data types you are using are compatible with the database layer. Some ABAP types may not have a direct equivalent in SQL or may not be supported in the database context.
  Custom Data Types: If