diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 7c35c120a3a96c7c11a62fe9a8f44f6c4c1b1d57..3a8d9d08c9dd93bf09a8c6b4036102029235e9ba 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -131,6 +131,13 @@ losoto_flagextend:
   allow_failure: true
   script:
     - cwl-runner --no-container steps/LoSoTo.Flagextend.cwl test_jobs/losoto_flagextend.json
+
+losoto_prefactor_xyoffset:
+  stage: test_steps
+  allow_failure: true
+  script:
+    - cwl-runner --no-container steps/LoSoTo.PrefactorXYoffset.cwl test_jobs/losoto_prefactorxyoffset.json
+
 losoto_flagstation:
   stage: test_steps
   allow_failure: true
diff --git a/steps/LoSoTo.PrefactorXYoffset.cwl b/steps/LoSoTo.PrefactorXYoffset.cwl
new file mode 100644
index 0000000000000000000000000000000000000000..49e072c3e00168540f0551dc35c4a183aa582a1d
--- /dev/null
+++ b/steps/LoSoTo.PrefactorXYoffset.cwl
@@ -0,0 +1,53 @@
+#!/usr/bin/env cwl-runner
+
+class: CommandLineTool
+cwlVersion: v1.0
+id: losoto_prefactor_xyoffset
+
+$namespaces:
+  lofar: https://git.astron.nl/eosc/ontologies/raw/master/schema/lofar.owl
+
+requirements:
+  InlineJavascriptRequirement:
+    expressionLib:
+      - { $include: utils.js}
+  InitialWorkDirRequirement:
+    listing:
+      - entryname: 'parset.config'
+        entry: $(get_losoto_config('PREFACTOR_XYOFFSET').join('\n'))
+
+      - entryname: $(inputs.input_h5parm.basename)
+        entry: $(inputs.input_h5parm)
+        writable: true
+
+baseCommand: "losoto"
+
+arguments:
+  - $(inputs.input_h5parm.basename)
+  - parset.config
+
+hints:
+  DockerRequirement:
+    dockerPull: lofareosc/lofar-pipeline-ci:latest
+
+inputs:
+  - id: input_h5parm
+    type: File
+    format: lofar:#H5Parm
+  - id: soltab
+    type: string
+    doc: "Solution table"
+  - id: chanWidth
+    type: string
+    doc: |
+      the width of each channel in the data from which solutions were obtained. Can be
+      either a string like "48kHz" or a float in Hz.
+      
+outputs:
+  - id: output_h5parm
+    type: File
+    format: lofar:#H5Parm
+    outputBinding:
+      glob: $(inputs.input_h5parm.basename)
+$schema:
+  - https://git.astron.nl/eosc/ontologies/raw/master/schema/lofar.owl
diff --git a/test_jobs/losoto_prefactorxyoffset.json b/test_jobs/losoto_prefactorxyoffset.json
new file mode 100644
index 0000000000000000000000000000000000000000..f98c786cfa2c41c6be9dc4206cd939b2f40adfc9
--- /dev/null
+++ b/test_jobs/losoto_prefactorxyoffset.json
@@ -0,0 +1,5 @@
+{
+  "input_h5parm": {"class": "File", "path": "/data/example.h5", "format": "lofar:#H5Parm"},
+  "soltab":  "sol000/phase000",
+  "chanWidth" : "48kHz"
+}