An Adelaide Court has heard a former couple charged with numerous child exploitation and sexual abuse offences will have 27 charges withdrawn, while more than 60 other charges remain against the pair.

A court has previously heard the offences are alleged to have been committed against their two foster children by the 45-year-old woman and 36-year-old man from suburban Adelaide.

The pair appeared in the Adelaide Magistrates Court via video link from custody.

The prosecutor previously told the court that multiple text messages had been found between the couple, where it was alleged they discussed the foster father sexually abusing their children, both aged under 11 at the time.

The pair appeared via video link in the Adelaide Magistrates Court.(ABC News: Carl Saville)

“Some 30,000 messages where they describe in great detail sexual acts — or wanting to be performed on these two victims,” the prosecutor told the court.

“[The pair] are now escalating to him messaging her, asking, ‘Can you find further victims? Young children’.

“They go out to shops, they call it ‘spotting’ — he looks for young children, she looks for young children and they discuss it.”

The charges, which are alleged to have occurred between April 2022 and late 2023, include multiple counts of produce child exploitation material, having sexual intercourse with a person under 14 and indecent assault.

The court has previously heard counsel for the female accused argued his client was not fully aware of what her co-accused was engaging in.

The pair will return to court in August to answer the charges.