"It is nearly old-fashioned to only calculate goods and not include services", Merkel said.
Naspers dropped 2%‚ eroding some of Friday's gains when it rocketed more than 6%.
The German chancellor defended the compromise agreement her Christian Democrats (CDU) struck with their smaller partners the Christian Social Union (CSU) to erect transit zones along Germany's southern border to speed up the deportation of ineligible asylum seekers, insisting that migration had to be better regulated.
Merkel, who has been in power for 13 years, is suddenly reversing her immigration policy in the hopes of keeping her government together, according to new reports.
Supporters of German AfD wave flags in front of the Brandenburg Gate in Berlin, Germany, Sunday, May 27, 2018.
German politicians who criticized the agreement say Merkel and her conservatives had abandoned the country's moral mission.
Merkel reiterated her position that if countries start turning migrants away at national borders unilaterally, it would cause neighboring countries to close their borders and jeopardize the border-free movement within the EU.
Seehofer said he had held a "conversation with no effect" on Sunday evening with the German chancellor, BBC reported. They would then be sent back to the countries where they had registered first.
"It is a precious thing for our party system and that is why I'm confident we will succeed", he said.
Issues among the C.D.U. were precipitated by the surprising strength of the Alternative for Germany political party in the country's 2017 elections, which won 94 seats in the Bundestag after previously being unrepresented.
The center-right leader needs the backing of both her junior coalition partner and fellow European Union states if the plan is to succeed.
"For the Christian Social Union (CSU) it is of utmost importance not to lose its credibility.The promise has been that Seehofer would stop immigration of those who are not entitled to go through the asylum procedure in Germany".
A Forsa poll published Monday showed some 77% of respondents said the conflict over immigration was putting the stability of the government at risk and two thirds said the CSU's behavior wasn't responsible.
They have agreed to a plan for so-called transit centres, from which people who have sought asylum in a different European Union country can be sent back to their arrival point, if the other state agrees.
The deal Ms Merkel made with Mr Seehofer still has to be agreed by her main coalition partner, the Social Democrats (SPD).
It drew immediate fire from critics, such us Bernd Riexinger of the opposition far-left Die Linke party, who on Twitter slammed the plan for what he labelled "mass internment camps" and judged that "humanity got lost along the way".
But SPD leader Andrea Nahles warned that "my patience has worn thin".
Horst Seehofer told fellow leaders of the conservative Bavarian CSU party he wants to resign as both party chief and interior minister, saying he had "no support", sources at their closed-door meeting in Munich told AFP.