How To Fix AD695 - Field & (use other data type in pool key)

SAP Error Message - Details

• Message type: E = Error

• Message class: AD - Data Dictionary application messages

• Message number: 695

• Message text: Field & (use other data type in pool key)

What causes this issue?

A key field of the pool has an incorrect data type. Only characterlike
data types are permitted for key fields.

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?

Change the data type of the particular key field to one of the
permissible data types CHAR, NUMC, ACCP, CLNT, CUKY, DATS, TIMS, LANG or
UNIT. Further information about the data types can be found in the
manual for the ABAP/4 Dictionary.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AD695 - Field & (use other data type in pool key) ?

  The SAP error message AD695 ("Field & (use other data type in pool key)") typically occurs when there is an issue with the data type of a field being used in a pool key. This error is often encountered in the context of ABAP programming, particularly when dealing with database tables or structures that are defined in the ABAP Dictionary.
  Cause:
  The error is caused by an attempt to use a field in a pool key that does not have the appropriate data type. In SAP, pool keys must be of certain data types (like CHAR, NUMC, etc.) that are compatible with the underlying database structure. If a field is defined with an incompatible data type (like a floating-point number or a complex structure), this error will be triggered.
  Solution:
  To resolve the AD695 error, you can take the following steps:
  
  
  Check Data Types: Review the data types of the fields being used in the pool key. Ensure that they are compatible with the requirements for pool keys. Commonly accepted data types include:
  
  CHAR (Character)
  NUMC (Numeric)
  DATS (Date)
  TIMS (Time)
  
  
  
  Modify Field Definitions: If you find that a field is defined with an incompatible data type, you may need to change its definition in the ABAP Dictionary. This could involve:
  
  Changing the data type of the field to a compatible type.
  Creating a new field with the correct data type and using it in the pool key instead.
  
  
  
  Check Table/Structure Definitions: If the error occurs in a table or structure, ensure that the primary key fields are defined correctly. The primary key fields must be of compatible data types.
  
  
  Recompile/Activate: After making changes to the data types or definitions, make sure to activate the changes in the ABAP Dictionary and recompile any related programs or function modules.
  
  
  Testing: After making the necessary changes, test the program or transaction that was causing the error to ensure that the issue has been resolved.
  
  
  Related Information:
  
  ABAP Dictionary: The ABAP Dictionary is a central repository in SAP where database objects like tables, views, and data elements are defined. Understanding how to navigate and modify objects in the ABAP Dictionary is crucial for resolving data type issues.
  Data Types in ABAP: Familiarize yourself with the various data types available in ABAP and their compatibility with database structures. This knowledge will help prevent similar errors in the future.
  SAP Notes: Check SAP Notes for any specific guidance or patches related to this error message. SAP frequently updates its knowledge base with solutions for common issues.
  
  If you continue to experience issues after following these steps, consider reaching out to your SAP support team or consulting the SAP community for further assistance.