For acct assignment element 'Grant' the value BLANK/SPACE is invalid

What causes this issue?

You have not made any entries for the
<DS:GLOS.BEB81240D4BAD411AE7800A0C9EAD00F> FM account assignment
element</> grant and have left the value as BLANK or SPACE.

System Response

The system does not carry out any further processing if you do not
enter a value for the grant.

How to fix this error?

Enter a valid value for the grant.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.