SAP Message RE168 - Open amount in document &1 &2 not sufficient

Diagnosis
The funds already used as well as those you are now requesting wouldexceed the available amount in the referencedearmarked funds &V1& &V2&.
INCLUDE FMRE_RE_TOL3 OBJECT DOKU ID TX
INCLUDE FMRE_RE_TOL4 OBJECT DOKU ID TX