How To Fix C1158 - Check table & has no key fields

C1158 - Overview

• Message type: E = Error

• Message class: C1 - Characteristics maintenance messages

• Message number: 158

• Message text: Check table & has no key fields

What causes this issue?

Check table &v1& has no key fields, so it is not possible to check
values.

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?

Please enter a check table that has exactly one key field, and a
client, if required.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message C1158 - Check table & has no key fields ?

  The SAP error message C1158, which states "Check table & has no key fields," typically occurs when you are trying to create or modify a check table in the SAP system, and the system detects that the check table does not have any key fields defined. This is a critical issue because check tables are used to enforce referential integrity in the database, and they must have at least one key field to function properly.
  
  Cause:
  
  No Key Fields Defined: The primary cause of this error is that the check table you are working with does not have any fields defined as key fields. In SAP, a check table must have at least one key field to be valid.
  Incorrect Table Configuration: The table may have been incorrectly configured or created without specifying key fields.
  Data Dictionary Issues: There may be issues in the data dictionary where the table definition is not correctly set