Subtype for communication infotype can not be determined in client &1

What causes this issue?

The system could not determine which subtype of the <ls>Communication
</> infotype (0105) is used to assign the user name to the personnel
number for client &V1&.

System Response

Converting the entries from the view <LS>Assignment of User to
Personnel Number</> (V_T513A) was not executed in the <ls>Communication
</> infotype(0105).

How to fix this error?

Inform your system administrator.

Procedure for System Administrators

In client &V1& of the <LS>System table</> (T77S0), you maintain the
entry with <LS>Group ID</> (GRPID) = <LS>MAIL</> and <LS>semantic
abbreviation</> (SEMID) = <LS>SAPSY</>. If you have any doubt, use the
value <LS>0001</> for <LS>Abbreviation value</> (GSVAL).

Error message extract from SAP system. Copyright SAP SE.