How To Fix I0899 - No entry can be made in field & as field cannot be checked

I0899 - Overview

• Message type: E = Error

• Message class: I0 - Messages for PM tables

• Message number: 899

• Message text: No entry can be made in field & as field cannot be checked

What causes this issue?

The entry in this field must agree with a dataset that has been
checked. No dataset exists for this field.

System Response

The system will not let you make an entry in this field.

Error message extract from SAP system. Copyright SAP SE.

I0899 - Details

• The SAP error message I0899 ("No entry can be made in field & as field cannot be checked") typically occurs when you are trying to enter data into a field that is not allowed to be modified or is not valid for the current context. This can happen for various reasons, including:
  Causes:
  
  Field Status Group: The field may be part of a field status group that is set to "Display" or "Hide," preventing any input.
  Validation Rules: There may be validation rules in place that restrict the values that can be entered in that field based on certain conditions.
  Data Type Mismatch: The data type of the input does not match the expected data type for that field.
  Authorization Issues: The user may not have the necessary authorizations to make changes to that field.
  Configuration Settings: The field may be configured in such a way that it is not editable in the current transaction or