Eric V of Denmark had signed an agreement on military assistance with Duke Magnus Birgersson who hired hundreds of armored warriors from the danish king's own army in addition to a strength of 700 men which was led by Count Jacob of Halland and the Danish Stig Andersen Hvide.
Duke Magnus Birgersson proclaiming himself king of Sweden, refused to pay the agreed sum of 6,000 marks of silver and complained about the ravages the Danish Assistance Force allegedly committed.
Eric V of Denmark decided to end the campaign because it was not meant as anything other than an act of revenge in response to the Swedish king's assault on Halland and Skåne.
After returning home, Eric V of Denmark began negotiations with the Swedes leading to a peace agreement in Laholm, Scania in early 1278.
[1] The war resulted in Magnus Birgersson remaining king of Sweden but he had to pay 4,000 marks of silver to the Danes.