I am trying to configure Gitlab Runner (macOS 11 no GUI) to be able to build our iOS app. For this I have done following things to codesign my app: Created Keychain Unlocked Keychain Imported Root CA and Apple WWDR Certificate Imported Private Key Imported Distribution Certificate But still when I list codesigning identity, it does not show up in valid list. It shows the identity in mached identity with error CSSMERR_TP_NOT_TRUSTED: ... previous steps before this command are executed security find-identity ~/Library/Keychains/MyKeychain 250 Policy: X.509 Basic 251 Matching identities 252 1) AXXXXXXXXXXXXXXXXXXXXXXXX9 "Apple Distribution: Company Name Here ([MASKED])" (CSSMERR_TP_NOT_TRUSTED) 253 1 identities found 254 Valid identities only 255 0 valid identities found I am not being able to codesign my app because of this. How can I solve it? I tried everything from this link also Here are the output when listing private key and certificates: $ security find-key MyKeychain 119keychain: "/Users/gitlab/Library/Keychains/MyKeychain-db" 120version: 512 121class: 0x00000010 122attributes: 123 0x00000000 <uint32>=0x00000010 124 0x00000001 <blob>="Imported Private Key" 125 0x00000002 <blob>=<NULL> 126 0x00000003 <uint32>=0x00000001 127 0x00000004 <uint32>=0x00000000 128 0x00000005 <uint32>=0x00000000 129 0x00000006 <blob>=0xxxxxxxxxxxxxxxxxxA "\331\357Oj8-\025{\242h\264\237\225N\3260\364\216CJ" 130 0x00000007 <blob>=<NULL> 131 0x00000008 <blob>=0xxxxxxxxxxxxxxxxxxx2D383439612sssssssssssD00 "{871xxxxx-***-xxxx-xxxx-xxxxxxxxxxx}\000" $ security verify-cert -v -k /Library/Keychains/System.keychain -c apple_wwdr.pem 230--- 231Trust evaluation results 232{ 233 TrustEvaluationDate = "2021-12-04 05:19:48 +0000"; 234 TrustResultDetails = ( 235 { 236 }, 237 { 238 } 239 ); 240 TrustResultValue = 1; 241} 242...certificate verification successful. 243--- 244Certificate chain 245 0: Apple Worldwide Developer Relations Certification Authority 246 <cert(0x7f92f2506230) s: Apple Worldwide Developer Relations Certification Authority i: Apple Root CA> 247 1: Apple Root CA 248 <cert(0x7f92f400a200) s: Apple Root CA i: Apple Root CA> $ security verify-cert -v -k MyKeychain -p codeSign -c ios_distribution.cer 95--- 96Trust evaluation results 97{ 98 TrustEvaluationDate = "2021-12-04 05:19:48 +0000"; 99 TrustResultDetails = ( 100 { 101 }, 102 { 103 }, 104 { 105 } 106 ); 107 TrustResultValue = 1; 108} 109...certificate verification successful. 110--- 111Certificate chain 112 0: Apple Distribution: Company Name ([MASKED]) 113 <cert(0x7fad7cd0acf0) s: Apple Distribution: Company Nmae ([MASKED]) i: Apple Worldwide Developer Relations Certification Authority> 114 1: Apple Worldwide Developer Relations Certification Authority 115 <cert(0x7fad7e00b200) s: Apple Worldwide Developer Relations Certification Authority i: Apple Root CA> 116 2: Apple Root CA 117 <cert(0x7fad7e00ba00) s: Apple Root CA i: Apple Root CA>