import_own_cert Installation of certificate failed

Dear Expert,

We want to configure SSL for SAP Web Dispatcher and we have followed the following steps:

1.Create the Web Dispatcher Server PSE and generate a CSR

sapgenpse.exe get_pse -p C:\disp\sec\SAPSSLS.pse -r sapwebdisp.req " CN=fiori.dianaholding.ma, OU=SSLServer, O=SAP-AG, C=DE"

2. Signing the CA using COMMODO

the content of sapwebdisp.req is sent to COMMODO for signing

3. Import the CSR response into the server PSE using the following command :

sapgenpse import_own_cert -c sapwebdisp.cer -p C:\disp\sec\SAPSSLS.pse -x cert2015

when we excute this command the bellow error occurs : import_own_cert Installation of certificate failed

We have also tried to run the following command but it still gives the same error :

sapgenpse import_own_cert -c sapwebdisp.cer -p C:\disp\sec\SAPSSLS.pse -r AddTrustExternalCARoot.cer -x cert2015

Thanks in advance for your help,