CIF_DELTAREPORT error 183 missing in R3 with external key

Hi Expert,

In the delta report (/SAPAPO/CCR - CIF_DELTAREPORT), there are discrepancies that say error code 183, which is Schedule line does not exist in R/3..
But when we look in R3, they are actually there. So we don’t want these showing as a discrep in the delta report.
Example in ‘purchasing’, ‘confirmations’, ‘missing in R3 with external key’

If you run DELTAREPORT for  purchasing, confirmation, unjustified error 183 are displayed despite of no inconsistence really exists.

tried checking note 1131469 - DELTAREPORT: unjustified error 181/183 for confirmation  but its obsolete

Our System version details are as below:-

R3 :-

RELEASE 604  ( SAPKH60406)

APO :-