How To Fix E2198 - Check table & has no key fields

E2198 - Overview

• Message type: E = Error

• Message class: E2 - DE Data Dictionary

• Message number: 198

• Message text: Check table & has no key fields

What causes this issue?

The check table specified for the field has no key fields. Probably you
specified a structure as check table.
The check table is used to limit the value range of a domain, i.e. a
field which refers to this domain can only accept values which exist in
the check table.
However, there are no data records for a structure. Therefore it makes
no sense to specify a structure as check table.

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?

Enter another check table.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message E2198 - Check table & has no key fields ?

  The SAP error message E2198, which states "Check table & has no key fields," typically occurs when you are trying to create or modify a check table in the Data Dictionary (SE11) and the table does not have any key fields defined. Check tables are used in conjunction with foreign key relationships, and they must have at least one key field to function properly.
  
  Cause:
  
  No Key Fields Defined: The check table you are trying to create or modify does not have any fields defined as key fields. Every check table must have at least one key field to ensure that it can be referenced correctly in foreign key relationships.
  Incorrect Table Definition: The table might have been defined incorrectly, or the key fields may have been removed or not set properly.
  
  
  Solution:
  To resolve the E2198 error, follow these steps:
  
  
  Open the Table in SE11:
  
  Go to transaction SE11 (Data Dictionary).
  Enter the name of the check